Which of the following metals does not react with a solution of copper sulphate?

In the long form of the periodic table,the $d$-block element which forms an interstitial hydride is

The element with $Z = 120$ (not yet discovered) will be a/an:

Metals are

Among the following,the most basic oxide is

Which of the following elements with the given electronic configurations belong to the same group?
$(i)$ $1s^2 2s^2$
$(ii)$ $1s^2 2s^2 2p^5$
$(iii)$ $1s^2 2s^2 2p^6 3s^2 3p^5$
$(iv)$ $1s^2 2s^2 2p^6 3d^{10} 4s^1$