Properties of materials

Medium

Look at the data below about four elements:

Element	Melting point ( $∘C^\circ\text{C}$ )	Density ( $g/cm3\text{g/cm}^3$ )	Ions formed
P	180	0.53	$P+\text{P}^+$
Q	-220	0.0017	$Q−\text{Q}^-$
R	1085	8.9	$R+\text{R}^+$ , $R2+\text{R}^{2+}$
S	650	1.74	$S2+\text{S}^{2+}$

Which element is a transition element?

[3]

Properties of materials Questions