The diagonal partner of element B is.
Li
Al
Si
Mg
Which of the following represents the correct order increasing electron gain enthalpy ?
S< O < Cl < F
Cl < F < O < S
O < S < F < Cl
F < S < O < Cl
Variable oxidation state and degenerated orbital shows
S-block element
P-block element
d- block element
All of these
Electronic configuration of an element 'x' having atomic number 24 is
[Ne]2p53s1
[Ar] 3d64s2
[Ar]3d44s2
[Ar]3d54s1
The ionisation energy will be maximum for
Be
B
H
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
Correct order of raddi is
Na < Be < B
F- < O2 - < N 3-
Na < Li < K
Fe3+ < Fe2+ < Fe4+
Identify the correct electronic configuration of Cr (Z=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
