Which of the following is not paramagnetic?

The bond order values of anions of sodium peroxide and potassium superoxide are respectively:

In which change do both the bond order and the number of unpaired electrons increase?

Select the incorrect statement.

In which of the following ionization processes,the bond order has increased and the magnetic behaviour has changed?

Fill in the blanks given below:
$(i)$ The Molecular Orbital Theory was proposed by .......... and .......... scientists.
$(ii)$ The addition of atomic orbitals results in the formation of ............ orbitals.
$(iii)$ The distribution of electrons in molecular orbitals is called .......... .
$(iv)$ The number of bonds between atoms joined by a covalent bond is called .......... .