Question

.
Species which are isoelectronic to one another are
(b) OH
(a) CN-
(d) N
(c) CH3
(e) co
Correct answer is :-
(1) a, b, c
(3) a, d, e
(2) a, c, d
(4) b, c, d​

Answer 1

Answer:

3 is correct answer

please follow me

Answer 2

(In this question, it should be $\[O{H^ - }\]$ instead of OH, $\[{N_2}\]$ instead of N and $\[C{H_4}\]$ instead of CH3.)

The species isoelectronic to one another are $\[O{H^ - }\]$, $\[{N_2}\]$ and $CO$.

Explanation:

• The species that have an equal number of electrons are called isoelectronic species.
• The number of electrons for the given species can be given as:

        $\[O{H^ - }:\,8 + 1 + 1 = 10\,{e^ - }\]$

        $\[C{N^ - }:\,6 + 7 + 1 = 14{e^ - }\]$

       $\[{N_2}:\,7 + 7 = 14{e^ - }\]$

       $\[C{H_4}:\,6 + 4 = 10{e^ - }\]$

       $\[CO:\,6 + 8 = 14{e^ - }\]$

• As $\[O{H^ - }\]$, $\[{N_2}\]$ and $CO$ have 14 electrons, therefore, they are isoelectronic to one another.