Questions: (Electro negativity)

Plot a graph represents the electro negativity and atomic number values of:

1.group 1A

2.Fluorine, chlorine, bromine, and iodine

3.The elements with atomic numbers 11 through 17

Answer: HERE
Referring to the Periodic Table, arrange the members of each of the following sets order of increasing electronegative:

1.O, P, and S         (O - S - P)        See the graph and Answer Why? 

2.Mg, Al, and Si     (Si - Al - Mg)   See the graph and Answer Why?

3.S, Cl, and Br       (Cl - Br - S)      See the graph and Answer Why?

4.C, Si, and N        (N - C Si)         See the graph and Answer Why?

Choose
The strength of an atom’s attraction for the electrons in a chemical bond is the atom’s

a.Electro negativity

b.Ionization energy

c.Heat of reaction

d.Heat of formation

Answer: a
Which of these elements have the strongest attraction for the electrons in a chemical bond?

a.Al

b.P

c.Si

d.S

Answer: b See the graph and Answer Why?
A characteristic of the halogens is that they have relatively:

a.low ionization energies

b.low electron affinities

c.high electronegative

d.Nothing of the above

Answer: c
Write short note about:
1.Electro negativity
2.Electron affinity
Compare between: Electro negativity and Electron affinity
Answer:

Electro negativity:

It is the tendency of an atom to attract electrons of the chemical bond to itself

Refers to atom in the molecular state

Electron affinity:

It is the energy needed to remove one or more electrons from a neutral atom to form a positively charged ion

Refers to atom in single state