Identify the non-polar molecule in the set of compounds given :
HCl, HF, H2, HBr
H2
HCl
HF, HBr
HBr
A.
H2
Among the given options, H2 is non-polar molecule.
Which of the following pairs involves isoelectronic ions ?
Mn3+ and Fe2+
Mn2+ and Fe3+
Cr3+ and Mn2+
Fe2+ and Co2+
The correct order of ionisation energy of C, N, O and F is
C < N < O < F
C < O < N < F
F < O < N < C
F < N < C < O
Pauling's electronegativity values for elements are useful in predicting :
polarity of bonds in molecules
position of elements in electromotive series
co-ordination number
dipole moment of various molecules
A metallic oxide reacts with water to from its hydroxide, hydrogen peroxide and also liberates oxygen. The metallic oxide could be
CaO
KO2
Li2O
Na2O2
Which is the correct order of electronegativity?
F > N < O < C
F > N > O > C
F > N > O < C
F < N < O = C