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
Molybdenum metal is related to which block?
s- block
p-block
d - block
none of these
________ is the least electronegative element.
F
Fr
Cs
Cl
Variable oxidation state and degenerated orbital shows
s-block element
p-block element
d- block element
All of these
Name the element having atomic number 105.
Kurchatovium
Dubnium
Nobelium
Holmium
The number of elements present in fifth period of periodic table is
10
8
32
18
Electronic configuration of an element 'x' having atomic number 24 is
[Ne]2p53s1
[Ar] 3d64s2
[Ar]3d44s2
[Ar]3d54s1
Electron affinity is maximum for
Br
I
The element with atomic number 36 belongs to _______ block in the periodic table.
p
s
f
d
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
