Question

The electronic configuration of few elements is given below. Mark the statement which is not correct about these elements.

(i) $1s^{2}2s^{2}2p^{6}3s^{1}$ (ii) $1s^{2}2s^{2}2p^{5}$

(iii) $1s^{2}2s^{2}2p^{6}$ (iv) $1s^{2}2s^{2}2p^{3}$

• A. (i) is an alkali metal.
• B. (iii) is a noble metal.
• C. (i) and (ii) form ionic compounds
• D. (iv) has high ionization enthalpy.

Answer 1

Answer: (B)

(iii) is a noble metal.

Answer 2

: (iii) is noble gas.