Which of the following have highest melting point
p-block elements
s-block elements
d- block elements
none of these
Correct order of raddi is
Na < Be < B
F- < O2 - < N 3-
Na < Li < K
Fe3+ < Fe2+ < Fe4+
Electron affinity is maximum for
Cl
F
Br
I
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
________ is the least electronegative element.
Fr
Cs
_________ has highest electronegativity.
Name the element having atomic number 105.
Kurchatovium
Dubnium
Nobelium
Holmium
Which is the property of non-metal?
Electronegativity
Basic nature of oxide
Reducing property
Low ionisation potential
Which one of the following is not a chalcogen?
S
Se
O
Na
The diagonal partner of element B is.
Li
Al
Si
Mg
