Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Which among the following hydride is covalent in nature ?Option: 1 <img alt="\mathrm{BeH}_2" src="https://entrancecorner.oncodecogs.com/gif.latex?%5C

Which among the following hydride is covalent in nature ?

Option: 1

\mathrm{BeH}_2


Option: 2

\mathrm{NaH}


Option: 3

\mathrm{KH}


Option: 4

\mathrm{CaH}_2


Answers (1)

best_answer

According to Fajan's rule -
a) If the size of anion is large, it will be easily polarised. Hence the compound will be more covalent.
b) If the size of cation is small, its polarising power will be more. Hence the compound will be more covalent.

\mathrm{NaH}, \mathrm{KH} and \mathrm{CaH}_2 are ionic hydrides and with increase in size of cation, ionic character of such compounds increases.

In \mathrm{BeH}_2, the size of cation \mathrm{Be}^{+} is small and relatively high charge ion. Thus, it has a high polarising power. This gives significant covalent character to \mathrm{BeH}_2.

Posted by

Riya

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

NEET UG 2025: Odisha Governor facilitates tribal girl who's first in her community to crack medical exam
anam-khan

Chhattisgarh: MBBS student dies by suicide in hostel room
anam-khan

Karnataka NEET UG round 2, KCET 2025 round 3 allotment process begins; 400 new MBBS seats added

Latest Question