Which of the following is not isoelectronic w | vedclass

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

Question

(D) Isoelectronic species are those that have the same number of electrons.For $O^{2-}$,the atomic number of oxygen is $8$. Since it has a charge of $

Vedclass · Accepted Answer

$Ca^{2+}$

Vedclass · Answer

(D) Isoelectronic species are those that have the same number of electrons.For $O^{2-}$,the atomic number of oxygen is $8$. Since it has a charge of $-2$,the number of electrons is $8 + 2 = 10$.Now,let us calculate the number of electrons for each option:$A) N^{3-}: 7 + 3 = 10$ electrons.$B) F^{-}: 9 + 1 = 10$ electrons.$C) Ne: 10$ electrons.$D) Ca^{2+}: 20 - 2 = 18$ electrons.Since $Ca^{2+}$ has $18$ electrons,it is not isoelectronic with $O^{2-}$.

Which of the following is not isoelectronic with $O^{2-}$?

Similar Questions

How many neutrons are present in the nucleus of $_{88}Ra^{226}$?

Which of the following elements is isoelectronic with $Na^{+}$?

If $W$ is the mass number and $N$ is the atomic number of an element,then:

Which of the following has the maximum number of neutrons?

Which of the following species is isotonic with $_{37}Rb^{86}$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module