Which one is the correct decreasing order of the ionic radii of the ions?
N3- > O2-> F- > Na+
N3-> Na+> O2- > F-
Na+ >O2-> N3-> F-
Na+> F-> O2->N3-
The ionic radii of N3-, O2-, F- and Na+ follow the order
N3- > O2- > F- > Na+
N3- > Na+ > O2- > F-
Na+ > O2- > N3- > F-
O2- > F- > Na+ > N3-
Which of the following metals will not form an amalgam?
Gold
Silver
Zinc
Iron
D.
Iron
Except iron all metals are soluble in Hg. The solution of metal in Hg is called amalgam.
Which of the following is an organo-metallic compound?
Lithium ethoxide
Ethyl lithium
Lithium acetate
Lithium carbide
Pick out the isoelectronic structures from the following
I and II
I and IV
I and III
II, III and IV