Question

Give the characteristic valence shell configuration of the following:(a) Noble gases (b) Representative elements(c) Transition elements .
​

Answer 1

Answer:

Noble gases - their configuration is octet

representative elements- their configuration is 1 to 7 electrons in their valence shell

transition elements-their configuration is their outermost shells incomplete

Answer 2

Answer:

:(a) helium is the noble gases

b)The elements present in s and p block elements except noble gases are known as representative elements .

A) Lanthanum is in d block

B) Argon is a noble gas

C) Chromium is a d block element

D) Aluminium is a p block element

Thus, aluminium is a representative element.