Get Answers to all your Questions

header-bg qa

The covalent alkaline earth metal halide \mathrm{(X= Cl, B r)} is

 

Option: 1

\mathrm{SrX_2}
 


Option: 2

\mathrm{\mathrm{Cax}_2}
 


Option: 3

\mathrm{Mgx}_2
 


Option: 4

\mathrm{Bex}_2


Answers (1)

best_answer

Alkaline earth metals contain bi positive \left(\mathrm{H}^{2+}\right) ions is the compounds here -

i. charge on cation ire +2 is constant
ii. Halide present \mathrm{\left(x^{-}\right)} is also constant

So, the covalent character depends on the sire of alkaline earth metal. As we more down the group, size of metal ion increases.

\mathrm{Be}^{2+}<\mathrm{Mg}^{2+}<\mathrm{Ca}^{2+}<\mathrm{Sr}^{2+}<\mathrm{Ba}^{2+}

So, \mathrm{Be}^{2+} readily forms covalent compounds.

Hence option 4 is correct.

Posted by

Pankaj

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks