Question

All the orbitals in the valence shell of the noble gases are completely filled. There are

two important group of non-metal first Hologen (Group-17) and chalcogen (group-

16). The group-15 element are also called pnicosen element. The element group 3 to

12 are d-block element that work as link between S and P block element.

Give the appropriate ans of following multiple choice question.

I. Which of the following is not noble gas

(a) Kr (b) Xe (c) Rn (d) Br

II. The pnicogen group elements are

(a) C, Si, Ce, Sn, Pb

(b) N, P, As, Sb, Bi

(c) B, Al, Ga, In, Tl

(d) O, S, Se, Te, Po

III. The electronic configuration of group 17 elements are



2



2



2

3



2

5



2

4

IV. The transition elements are

(a) S – block element

(b) P – block element

(c) D – block element

(d) F – block element​

Answer 1

Answer:

l. Kr

ll. a) C, Si, Ce, Sn, Pb

lll. 1s^2 2s^2 2p^6 3s^2 3p^5

lV. D- block element