In which of the following ionic pairs,is the | vedclass

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

Question

(B) For isoelectronic species,the size decreases as the nuclear charge (number of protons) increases. $F^{-}$ has $9$ protons and $10$ electrons. $Na^

Vedclass · Accepted Answer

$F^{-}, Na^{+}$

Vedclass · Answer

(B) For isoelectronic species,the size decreases as the nuclear charge (number of protons) increases. $F^{-}$ has $9$ protons and $10$ electrons. $Na^{+}$ has $11$ protons and $10$ electrons. Since $Na^{+}$ has a higher nuclear charge than $F^{-}$,the electrons are pulled more strongly towards the nucleus,making $Na^{+}$ smaller than $F^{-}$. Thus,in the pair $(F^{-}, Na^{+})$,the second ion is smaller than the first.

In which of the following ionic pairs,is the second ion smaller in size than the first ion?

Similar Questions

Which of the following statements is incorrect?

On going down a main sub-group in the periodic table (example $Li$ to $Cs$ in $IA$ or $Be$ to $Ra$ in $IIA$),the expected trend of changes in atomic radius is a

Which one of the following is the smallest in size?

Which element from the following has the largest atomic size compared to the other three?

What are the covalent and van der Waals radii in $Cl_2$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module