_________ has highest electronegativity.
F
Br
Cl
I
The ionisation energy will be maximum for
Be
Li
B
H
Which of the following have highest melting point
p-block elements
s-block elements
d- block elements
none of these
The element with atomic number 36 belongs to _______ block in the periodic table.
p
s
f
d
Which one of the following is not a chalcogen?
S
Se
O
Na
Electronic configuration of an element 'x' having atomic number 24 is
[Ne]2p53s1
[Ar] 3d64s2
[Ar]3d44s2
[Ar]3d54s1
The diagonal partner of element B is.
Al
Si
Mg
The number of elements present in fifth period of periodic table is
10
8
32
18
Which of the following has the highest electron affinity?
F-
O-
The element with lowest ionisation potential is
K
Rb
Cs
