21
MCQ (Single Correct Answer)
The electronic configuration of the outer most shell of the most electronegative elements is
A
$2 s^2 2 p^5$
B
$3 s^2 3 p^5$
C
$4 s^2 4 p^5$
D
$5 s^2 5 p^5$
22
MCQ (Single Correct Answer)
Amongst the following elements whose electronic configuration are given below, the one having the highest ionisation enthalpy is
A
$[\mathrm{Ne}] 35^2 3 p^1$
B
$[\mathrm{Ne}] 3 s^2 3 p^3$
C
$[\mathrm{Ne}] s^2 3 p^2$
D
$[\mathrm{Ar}] 3 d^{10} 4 s^2 4 p^3$
23
MCQ (Multiple Correct Answer)
Which of the following have identical bond order?
A
$\mathrm{CN}^{-}$
B
$\mathrm{NO}^{+}$
C
$\mathrm{O}_2^{-}$
D
$\mathrm{O}_2^{2-}$
24
MCQ (Multiple Correct Answer)
Which of the following attain the linear structure?
A
$\mathrm{BeCl}_2$
B
$\mathrm{NCO}^{+}$
C
$\mathrm{NO}_2$
D
$\mathrm{CS}_2$
25
MCQ (Multiple Correct Answer)
CO is isoelectronic with
A
$\mathrm{NO}^{+}$
B
$\mathrm{N}_2$
C
$\mathrm{SnCl}_2$
D
$\mathrm{NO}_2^{-}$