An ion with a charge of -2 has the electronic | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The given electronic configuration is $1s^2, 2s^2, 2p^6$,which corresponds to a total of $10$ electrons.Since the ion has a charge of $-2$,it mean

Vedclass · Accepted Answer

$O^{2-}$

Vedclass · Answer

(A) The given electronic configuration is $1s^2, 2s^2, 2p^6$,which corresponds to a total of $10$ electrons.Since the ion has a charge of $-2$,it means it has gained $2$ electrons.Subtracting these $2$ electrons gives the neutral atom configuration: $1s^2, 2s^2, 2p^4$,which corresponds to $8$ electrons.The element with atomic number $8$ is Oxygen $(O)$.Therefore,the ion is $O^{2-}$.

An ion with a charge of $-2$ has the electronic configuration $1s^2, 2s^2, 2p^6$. Identify the ion.

Similar Questions

The allowed set of quantum numbers for an electron in a hydrogen atom is

Choose the pair whose ions have the similar electronic configuration.

The maximum number of electrons that can be accommodated in $f$ subshell is

For a multi-electron atom,the highest energy level among the following is

Which of the following sets of quantum numbers is not correct?

Vedclass Test Series

Exam Paper Generator

Online Exam Module