Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Which of the following is incorrect statement?Option: 1 s-block elements form ionic hydrides.  <str

Which of the following is incorrect statement?

Option: 1

s-block elements form ionic hydrides.
 


Option: 2

\mathrm{BeH}_2 and \mathrm{MgH}_2 are covalent in nature.


Option: 3

p−block elements form covalent hydrides
 


Option: 4

None of the above


Answers (1)

best_answer

Covalent hydrides are compounds of hydrogen and non-metals due to their similarity in electronegativity. As non-metals are present in p-block, hence p-block elements form covalent hydrides.

Ionic hydrides are formed when hydrogen reacts with highly electropositive s-block elements except \mathrm{Be} and \mathrm{Mg}. In \mathrm{BeH}_2 \, \&\, \mathrm{MgH}_2, the size of cation \mathrm{Be}^{2+} and \mathrm{Mg}^{2+} is small and relatively high charge ion. Thus, it has a high polarising power. This gives significant covalent character to \mathrm{BeH}_2 \, \, \& \, \, \mathrm{MgH}_2.

Hence, (1) is incorrect.

Posted by

jitender.kumar

View full answer

NEET 2024 Most scoring concepts

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

Similar Questions

Trending Articles/News

anam-khan

‘Re-NEET must be secure, transparent and fool proof’: Dharmendra Pradhan at review meeting
anam-khan

NEET UG 2026 Re-exam on June 21; top medical colleges with lowest MBBS fees
anam-khan

Re-NEET Exam 2026 LIVE: Re-test on June 21; CBI probes NTA leak link, official guidelines, correction window

Latest Question