Rank all the following elements in order of increasing electronegativity:
I, F, Br, At, CI
Answers
Answer:
At < I < Br < Cl < F
Explanation:
Electronegativity is defined as the ability of an atom to attract pair of electrons. On the periodic table, electronegativity decreases down the group and increases along the period.
The given atoms belong to the same group, so following the above rule, F has the highest electronegativity than other given atoms as it is at the top of the group and At will have the least electronegativity as it is at the bottom of the group.
Hence, the order of increasing electronegativity is
At < I < Br < Cl < F.
Related Questions
Which substance can form a coordinate covalent bond with a hydrogen ion?
a. H2
b. He
c. NH3
d. CH4
Answers
The substance can form a coordinate covalent bond with a hydrogen ion is He. Hence, option B is correct.
What is covalent bond ?An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond. Bonding pairs or sharing pairs are the names given to these electron pairs.
Covalent bonding is the stable equilibrium of the attractive and repulsive forces between atoms when they share electrons.
Covalent bonds were first described in 1939. The word "covalent bond" is derived from the prefix co-, which means jointly, associated in action, partnered to a lesser extent, etc. The hydrogen atoms share the two electrons through covalent bonding since the prefix co- implies jointly, associated in action, etc.
Thus, option B is correct.
To learn more about covalent bond, follow the link;
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Write a 4-7 sentence summary on the topic Radiation. (don't mind the orange color)
Answers
Answer:
pa brainliest answer po pa heart pa follow me and back
Explanation:
SUMMURY
Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. ... Ionizing radiation, which includes ultraviolet radiation, radon, x-rays, and gamma rays.
Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.
DIFFENITION :
radiation
1a: the action or process of radiating
b: the process of emitting radiant energy in the form of waves or particles
c(1): the combined processes of emission, transmission, and absorption of radiant energy
(2): the transfer of heat by radiation
— compare CONDUCTION, CONVECTION
2a: something that is radiated
b: energy radiated in the form of waves or particles
3: radial arrangement
4: ADAPTIVE RADIATION
Plz help... answer this question!
Answers
Answer:
B
Explanation:
Because element is made up of only one type of atoms and figure b show only one type of atoms.
____CH4 +___O2 ->
____H3N+____O2->
Answers
Explanation:
CH4 + 2 O2 -> CO2 +2 H2O
4 H3N+3 O2 -> 6H2O + 2 N2
From Bill Nye Germs video in the way cool scientist section, what career is the focus of this segment?
Answers
I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't know
What role did photographic plates play in the discovery of radioactivity?
Answers
When Henri Becquerel investigated the newly discovered X-rays in 1896, it led to studies of how uranium salts are affected by light. By accident, he discovered that uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.
Explanation: Please mark me brainliest :)
Explain the similarities and differences between putting a beaker of ethanoic acid in the refrigerator and mixing it with sodium carbonate
Answers
Answer:
See explanation
Explanation:
When a beaker of ethanoic acid is placed in the refrigerator, its temperature drops and the vessel feels cool.
Now, when we mix ethanoic acid and sodium carbonate, an endothermic reaction occurs, fizzing is observed as carbon dioxide is given off and heat is lost to the surroundings causing the reaction vessel to feel cool to touch.
The difference between putting ethanoic acid in the refrigerator and adding sodium carbonate to the solution is that, in the former, no new substance is formed. The substance remains ethanoic acid when retrieved from the refrigerator. In the later case, new substances are formed. The substance is no more ethanoic acid because a chemical reaction has taken place.
When a negatively charged beta particle is emitted by a radioactive nucleus which change happens in the nucleus?
a. The number of protons increased by one
B. The number of neutrons increased by one
C. The number of nucleons increased by one
D. The number of nucleons decreased by one
Answers
Answer:
d
Explanation:
its d because a beta particle has a negative charge
In the case when there is the negatively charged beta particle so the number of nucleons decreased by one.
What are nucleons?In terms of chemistry and physics, a nucleon could be treated as the proton or neutron also it considered as the component of the atomic nucleus. Here the no of nucleons in the nucleus should represent the atom mass number.
So based on this, we can conclude that In the case when there is the negatively charged beta particle so the number of nucleons decreased by one.
Learn more about particle here: https://brainly.com/question/12734041
Isotope what dose it mean
Answers
Answer:
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
"some elements have only one stable isotope"
Explanation:
Calculate the mass of the zinc that reacts with 4.11 g of hydrochloric acid to form 9.1 g of zinc chloride and 3.97 g of hydrogen gas.
Answers
Answer: Mass of zinc that reacts with 4.11 g of hydrochloric acid to form 9.1 g of zinc chloride and 3.97 g of hydrogen gas is 8.96 g
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
[tex]Zn+2HCl\rightarrow ZnCl_2+H_2[/tex]
Given: mass of hydrochloric acid = 4.11 g
Mass of products = Mass of zinc chloride + mass of hydrogen = 9.1 g + 3.97 g = 13.07 g
As mass of reactant = mass of products
mass of hydrochloric acid + mass of zinc = Mass of zinc chloride + mass of hydrogen
4.11 g + mass of zinc = 13.07 g
mass of zinc = 8.96 g
9. Carbon-14 has a half-life of 5,730 years. How many years have passed after 3
half-lives?
Answers
Answer:
120 gram sample of a radioactive element, how many grams of that element will be left after 3 half-lives have passed? If you have a 300
Explanation:
Hope this helps!
3. What is the primary consumer in the following food chain, sun - tomato plant - tomato worm - wasp?
tomato worm
tomato plant
wasp
sun
Answers
Answer:
Tomato worm
Explanatio
v
vv
Answer
Tomato Worm
Explanation:
Cuban swimmer Cesar Godoy won the gold medal In the 150-meter freestyle swim. He
swam 150 meters In 23 seconds. How fast did he swim on average?
Answers
The average speed = 6.52 m/s
Further explanationGiven
distance = 150 m
time = 23 s
Required
The average speed
Solution
The average speed : distance traveled divided by time taken or total distance divided by total elapsed time
Can be formulated :
avg speed = distance : time
avg speed = d : t
Input the value :
avg speed = 150 m : 23 s
avg speed = 6.52 m/s
plllllz its 100 and i give brain list
Answers
Answer:
Your answer is the on with the clownfish and the anemone
Explanation:
Hope this helps!
How many moles of each element are in one mole of (NH4)2S? (3 points)
a
1 mole of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
b
1 mole of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
c
2 moles of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
d
2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Answers
Answer:
2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Explanation: i took the test and got it right
The number of moles for each element in one mole of (NH₄)₂S are:
d. 2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
Identification of number of moles:The number of moles can be identified by dividing the given mass by molar mass.
In one mole of (NH₄)₂S there are moles of each participating element i.e. nitrogen, oxygen, hydrogen, and sulfur.
In this molecule, there are 2 moles of nitrogen, 8 moles of hydrogen, and one mole of sulfur.
Thus, option d is correct.
Find more information about One mole here:
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In each of the following sets of elements, which one will be least likely to gain or lose electrons?
1. Cesium (Cs), Rubidium (Rb), and Sodium (Na)
2. Barium (Ba), Calcium (Ca), and Beryllium (Be)
3. Fluorine (F), Chlorine (Cl), and Bromine (Br)
4. Tellurium (Te), Oxygen (O), and Sulfur (S)
Answers
2. The elements in this set are the group II alkaline earth metals, and they follow the same trend as the alkali metals. Of the elements here, beryllium (Be) would have the highest effective nuclear charge, and so it would be the least likely to lose its valence electrons. In fact, beryllium has a tendency not to lose (or gain) electrons, i.e., ionize, at all; it is unique among its congeners in that it tends to form covalent bonds.
3. While the alkali and alkaline earth metals would lose electrons to attain a noble gas configuration, the group VIIA halogens, as we have here, would need to gain a valence electron for an full octet. The trends in the group I and II elements are turned on their head for the halogens: The smaller the atomic number, the less shielding, and so the greater the pull by the nucleus to gain a valence electron. And as the atomic number increases (such as when you go down the group), the more shielding there is, the weaker the effective nuclear charge, and the lesser the tendency to gain a valence electron. Bromine (Br) has the largest atomic number among the halogens in this set, so an electron would feel the smallest pull from a bromine atom; bromine would thus be the least likely here to gain a valence electron.
4. The pattern for the elements in this set (the group VI chalcogens) generally follows that of the halogens. The greater the atomic number, the weaker the pull of the nucleus, and so the lesser the tendency to gain electrons. Tellurium (Te) has the highest atomic number among the elements in the set, and so it would be the least likely to gain electrons.
statement that accurately describes broadleaf trees??
Answers
Answer:thy have needle like leave
Explanation:
Answer:
dzfz d vfg
Explanation:
bnnbvmyjggbbdfg
_____
particles are very small compared to the large
amounts of empty space in the container.
Answers
Answer:
Gas
Explanation:
The question is asking solid, liquid or gas. Gas particles are the smallest.
< Question 3 of 25
>
What is the pressure of the gas in this mercury manometer
if h = 85 mm and atmospheric pressure is 755 mmHg?
pressure:
mmHg
Answers
Answer:
360mmHg is the correct answer in its units
PLEASE HELP i suck at chemistry ;(
Answers
Answer:
Explanation:
The Molar mass of Fe(Bro)2 = 167. 748 mol/g
Photochemical isomerization of (E,E)-2,4-hexadiene to (Z,E)-2,4-hexadiene is a two-step process in which a photochemically driven intermediate forms and then thermally rearranges to give the product. Draw the structure of this intermediate, using wedge-and-dash bonds to denote the appropriate stereochemistry.
Answers
Answer:
Its response to this question is as follows:
Explanation:
Please find in the attachment file the complete query and the answer file.
The major product during addition of HBr to propene in the presence of peroxide is
A. 2-Bromopropane
B. 1-Bromopropane
C. 1,1-dibromopropane
D. 1,2-Dibromopropane
Answers
Answer:
A. 2-Bromopropane
Explanation:
Propene is the second member of the alkene group with the chemical formula; C3H6. It reacts with hydrogen bromide (HBr), which is an acidic compound to form an alkylbromide.
In this reaction, the formation of a major product is in accordance with Markovnikov's rule, which emphasizes that hydrogen will be added to the carbon with more hydrogen. Hence, the bromide ion of HBr will be added to the second carbon atom of the alkene (propene), to form 2-bromopropane as a major product.
The reaction is as follows:
CH3CH=CH2 (propene) + HBr → CH3CHBrCH3 (2-bromopropane).
True or false.
“Sleeping does not give us energy, but is important because it helps us repair wounds; think better, grow and survive.”
hurry pls pls plsss
Answers
Answer:
False
Explanation:
State, in terms of the strength of intermolecular forces, why 12 has a higher boiling point than F2
Answers
Answer:
See explanation
Explanation:
The greater the relative atomic mass of an atom the more polarizable the atom is.
Also, the magnitude of dispersion forces depends on the molecular mass of the compound.
We must remember that both I2 and F2 are nonpolar molecules that are purely held together by dispersion forces.
Hence, I2, having the greater molecular mass and surface area experiences a greater magnitude of dispersion forces and consequently has a higher boiling point than F2.
2. When iron rusts what is it reacting with?
Carbon Dioxide
O
Salt
O Oxygen
O Chocolate
Answers
Answer:
The answer is oxygen
what will happen if you increase the electric current is flowing through an electro magnet
Answers
Answer:see below
Explanation: The magnetic field will strengthen and the magnet will get warmer (resistance effect)
21.Electromagnetic radiation can take the form of which of the following types of waves
a.Heat
b.Light
c.Ultraviolet
d.All of the above
Answers
What is a solution made of
Answers
Answer:
A solution is made when a substance called the solute "dissolves" into another substance called the solvent.
Explanation:
Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules.
Select a statement which is NOT true about solubility.*
(1 Point)
a) Solubility of solids in liquids increases with temperature.
b) Solubility can be increased by using powdered sugar than sugar cube.
c) Solubility of gases decreases with decrease in temperature.
d) Solubility of solids are different in different solutions.
Ok
Answers
Answer:
I think it's b.
Explanation:
Because solubility increased by temperature.
Answer:
b) Solubility can be increased using sugar powder than sugar cube
i just had my chemistry lessons completed and we were revising solubility llol
What is the word equation for the decomposition of hydrogen peroxide
Answers
Answer:
2H2O2 --> 2H2O + O2
Explanation:
We know that hydrogen peroxide is H2O2
Decomposition means that you break down so break down H2O2
H2O2 --> H2O + O2
There are three oxygens so we have to balance
2H2O2 --> 2H2O + O2