Hydrogen molecule shares .................... pair of electron.

Hydrogen molecules are

Double covalent bond is formed by sharing .....................electrons.

Odd electron molecule is

Name a neutral covalent molecule which contains lone pair of electrons.

Adenine is always paired with ................. in RNA molecule.

Give reasons for the following: A molecule of ammonia has one lone pair of electrons.

Draw the electron dot structure of ammonia molecule and indicate (i) the shared pair of electrons and (ii) lone pair of electrons

Number of cytochrome molecules required for the transfer of a pair of electrons through ETS is

Assertion(A) - In case the central atom in a molecule is surrounded only by shared pairs of electrons, the molecule has a regular geometry. Reason(R) -The shared pair of electrons repel each other with equal force so all bonds are equidistant from each other.

Given below is the table showing shapes of some molecules having lone pairs of electrons. Fill up the blanks left in it.