If $M^{+3}$ has configuration $[Ar]3d^{10}$,then $M$ belongs to :-

In the following,the element with the highest electropositivity is

Which of the following is a metalloid?

The correct decreasing order for metallic character is:

Which of the following has the maximum tendency for hydrate formation?

Use the periodic table to answer the following questions.
$(a)$ Identify an element with five electrons in the outer subshell.
$(b)$ Identify an element that would tend to lose two electrons.
$(c)$ Identify an element that would tend to gain two electrons.
$(d)$ Identify the group having metal,non-metal,liquid as well as gas at room temperature.