A: Beryllium chloride has much lower electrical conductivity than calcium and magnesium chlorides (salts are exist in fused state)
R : Beryllium exists as ${[B e {(H_{2} O)}_{4}]}^{+ +}$ in acid medium and ${[B e {(O H)}_{4}]}^{-}$ in basic medium

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

A is true R is true but R in not correct explanation of A

A is true R is true R is correct explanation of A

A is true R is false

A is false R is true

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$B e C l_{2}$ is covalent compound $C a C l_{2} & M g C l_{2}$ is ionic compound
${[B e {(H_{2} O)}_{4}]}^{2 +}$ is an acid. The hydrated beryllium ions is are strongly acidic. The small beryllium ion centre attracts at the electrons in the bonds towards itself and that makes the hydrogen atoms in the water even more positive than the usually rare.