The electron affinity of an atom
is directly proportional to its size
is inversely proportional to its size
is independent of its size
none of these
When XA>>XB, A–B bond is
Covalent
Non-polar covalent
Ionic
Metallic
Effective nuclear charge (Z*) can be calculated using the formula
Z* = Z-S
Z* = Z + S
Z* = S – Z
Z = Z* – S
Comparing the ionisation energy of fluorine with carbon, fluorine has
higher ionisation energy
lower ionisation energy
same ionisation energy
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 bond distance of H-H bond is
1.44 Å
1.98 Å
0.74 Å
2.28 Å
Electron affinity is expressed in
kJ
J
kJ mol
kJ mol-1
Electronegativity of an atom is
Directly proportional to its nuclear charge
directly proportional to its atomic radii
inversely proportional to its nuclear charge
independent
Noble gases have _____electron affinity.
High
Low
Zero
Very low
The value of C-C distance found experimentally in a saturated hydrocarbon is
1.34Å
1.36Å
1.54Å
1.56Å
