Covalent Bonding

What is covalency?

Which among the following is least covalent in nature?

The Xenon difluoride can act as _____.

Bonding in this molecule can be understood to involve coordinate bonding.

The valency of iron in ${\mathrm{Fe}}_2{\mathrm{O}}_3$ is

The formula of compound represents

Oxygen, nitrogen and platinum are respectively

There should be less than four electrons for atoms to form covalent bonds.

${\mathrm{XCl}}_2$ is the chloride of a metal $\mathrm{X}$. State the formula of the sulphate and the hydroxide of the metal $\mathrm{X}$.

Type 1: Subjective Numerical

Assertion. The atoms in a covalent molecule are said to share electrons, yet some covalent molecules are polar.

Reason. In a polar covalent molecule, the shared electrons spend more time than average near one of the atoms

Assertion. When two hydrogen atoms approach each other to form a covalent bond, nearly $435.8 \mathrm{kJ} {\mathrm{mol}}^{-1}$ of energy is released.

Reason. When two atoms approach each other to form a covalent bond between them, potential energy of the system continuously decreases.

Among the following, select the correct statement(s) about covalent compounds.

The formation of a chemical bond is accompanied with decrease in:

Total number of electron pairs shared by nitrogen atoms in the ${\mathrm{N}}_2$ molecule is?

During a coordinate bond formation,

In a covalent bond formation:

How many and what types of bonds are present in $\mathrm{N}{\mathrm{H}}_4^{+}$?

This is $\mathrm{Assertion}-\mathrm{Reason}$ type question. This question contains two statements. Statement - 1 (Assertion) and Statement - 2 (Reason). This question also has four alternative choices, only one of which is the correct answer. You have to select the correct choice.

Assertion: Diamond is thermally more stable than graphite.

Reason: In diamond unit cell is like of zinc blende.

How many bonds are there in