Why BeCl2 is a covalent compound though there is much difference of electronegativity between the two atoms ?

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Q. Assertion :During covalent bonding the electronegativity difference between two atoms is greater than

1.7

Reason: Covalent bond is formed by sharing of electrons between atoms that have same size

(a) What type of bond is formed between two atoms, when the difference in electronegativity between them is
(i) high, (ii) low, (iii) zero?
(b) Separate the following compounds into three categories- ionic, polar and covalent compounds; N₂, NH₄Cl, NH₃, NO, NH₄NO₃, NCl₃.

Q. Assertion :

L i C l

is predominantly a covalent compound. Reason: Electronegativity difference between

L i

and

C l

is too small.

Q. Two atoms of similar electronegativity would be expected to form a covalent compound if true enter 1 else 0.

What is the essential difference in the nature of compounds when two combining atoms do not differ much in their electronegativities?

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