Question

# Which among the following elements has the tendency to form covalent compounds?

A
Ba
B
Be
C
Mg
D
Ca

Solution

## The correct option is B $$Be$$All the given elements are from II-A group. In general, moving from top to bottom in a group the ionic character increases and covalent character decreases. $$Be$$ is at the top in the group having the highest covalent character. $$Be$$ forms covalent compounds with $$Cl, Br$$ & $$I$$. $$Be$$ has $$2$$ valence electrons. Due to its small size, it has high polarizing power & forms a covalent bond.Hence, the correct answer is B.Chemistry

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