Calcium has tendency to gain the electronic configuration of ………..
a) Mg
b) Ne
c) Ar
d) Kr
Calcium has ………..nature.
a) divalent
b) trivalent
c) tetravalent
d) monovalent
Aluminium has ……….. nature to form AlCl3
a) monovalent
b) tetravalent
c) trivalent
d) divalent
Explanation:Aluminium has three electrons in its valence shell and it makes bonds with three chlorine atoms .So it is called trivalent.
CaCl2 is a…………compound.
a)ionic
b) covalent
c) dative covalent
d) metallic
AlCl3 is …………… compound.
a) ionic
b) covalent
c) dative covalent
d) metallic
An example of molecule made up same kind of atoms ……..
a)H2
b) KBr
c) HCl
d) Hbr
