______ is defined as the tendency of an atom in a molecule to attract the shared pair of electrons towards itself.
Electropositivity
Electronegativity
Electron gain enthalpy
Electron affinity
Which is the property of non-metal?
Basic nature of oxide
Reducing property
Low ionisation potential
________ is the least electronegative element.
F
Fr
Cs
Cl
Identify the correct electronic configuration of Cr (2=24)
1s2, 2s2, 2p6, 3s2, 3p6, 3d7, 4s1
1s2, 2s2, 2p6, 3s2, 3p6, 3d5, 4s2
1S2, 2s2, 2P6, S2, 3P6, 3d7, 4s2
1s2, 2s2, 2p6, 3s2, 3p6, 3d6, 4s2
Molybdenum metal is related to which block?
s- block
p-block
d - block
none of these
Pick the correct answer,
according to the periodic law of elements ,the variation in properties of elements is related to their,
atomic masses
nuclear masses
atomic number
nuclear neutron -proton ratio
_________ has highest electronegativity.
Br
I
The element with atomic number 36 belongs to _______ block in the periodic table.
p
s
f
d
Which of the following has the highest electron affinity?
F-
O-
O
Na
The number of elements present in fifth period of periodic table is
10
8
32
18
