What is the bond order in N$$_2^+$$?

Identify alkaline earth metal from following.

What is the molality of solution of a non-volatile solute having boiling point elevation $$7.15 \mathrm{~K}$$ and molal elevation constant $$2.75 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$ ?

Which from following statements about rate constant is NOT true?