Atomic radii increases on moving down a group due to
increase in nuclear charge
Additive electrons added to the same electronic level
introduction of extra energy shells
additive electrons in outermost shell.
The value of C-C distance found experimentally in a saturated hydrocarbon is
1.34Å
1.36Å
1.54Å
1.56Å
Electronegativity of an atom is
Directly proportional to its nuclear charge
directly proportional to its atomic radii
inversely proportional to its nuclear charge
independent
Pick the correct statement
Carbon having more nuclear charge than boron
The size of carbon atom is larger than boron
Carbon forms electron deficient compounds
Carbon forms ionic compounds
Electron affinity is expressed in
kJ
J
kJ mol
kJ mol-1
The scale which is based on an empirical relation between the energy of a bond and the electro negativities of bonded atoms is
Pauling scale
Mulliken’s scale
Sanderson’s scale
Alfred and Rochow’s scale
When XA>>XB, A–B bond is
Covalent
Non-polar covalent
Ionic
Metallic
The bond distance of H-H bond is
1.44 Å
1.98 Å
0.74 Å
2.28 Å
The order of ionization energy
s < p < d < f
s > p > d > f
s > d > p > f
s < d < p < f
On moving down the group, the radius of an ion
Decreases
Increases
No change
None of these
