Molybdenum metal is related to which block?
s- block
p-block
d - block
none of these
Which of the following have highest melting point
p-block elements
s-block elements
d- block elements
The number of elements present in fifth period of periodic table is
10
8
32
18
Electron affinity is maximum for
Cl
F
Br
I
Which of the following has the highest electron affinity?
F-
O-
O
Na
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
________ is the least electronegative element.
Fr
Cs
Correct order of raddi is
Na < Be < B
F- < O2 - < N 3-
Na < Li < K
Fe3+ < Fe2+ < Fe4+
The element with atomic number 36 belongs to _______ block in the periodic table.
p
s
f
d
Variable oxidation state and degenerated orbital shows
s-block element
p-block element
d- block element
All of these
