Question

The element with atomic number 25 belongs to

A. s- block B. p-block C. d-block 0. f-block

AII of the following arranged elements based on their masses Except A. Doberiener B. mosely C. Menedeleev D. Newland

The most metallic element among the following is

A. Na B. Li C.K D. Rb

AII of the following decreases down a group Except

A. electron positivity B. electro negativity

C. electro affinity D. Ionization energy

Which of the following elements has the smallest electron affinity?

A.C B.O C. Ne D.F

III. Give short answer for the following questions.

arrange the following in increasing order of ionization energy

a.AI，Mg，S/P b. Li，Na,K，Rb

arrange the following in increasing order of atomic size

a.Mg，Al，Si .S, Cl b. Cl ,Fy Brz I

List the factors that affect electron affinity

Find the period group and block of

a. Ar

c. Sb

Arrang the following in ascending order of electro negativities a. 0, N, F, Cl b. Li zBe ZC, B C.F, Cl, Br, I

Answer 1

1. D
2. C
3. D
4. A
5. A

III

1. a. Mg Al Pb S

b. Rb K Na Li

2 a. Cl S Si Al Mg

b. F Cl Br I

3 Ionization energy, atomic radius, electronegativity

4 a. VIII p-block

b. V p-block

5 a. N Cl O F

b. Li Be B C

c. I Br Cl F