The wrong statement out of the following is
Van der Waal's radius of iodine is more than its covalent radius.
All isoelectronic ions belong to same period of the periodic table.
IE1 of 'N' is higher than that of 'O" while IE2 of 'O' is higher than that of 'N'.
The electron affinity of 'Cl' is greater than that of 'F'.
The amount of energy required to convert 3 moles of sodium atoms in the gaseous state to form sodium ions, if the ionisation enthalpy of Na is 5.1 ev/atom is
1476J
147.6J
1476KJ
147.6KJ
The outermost electronic configuration of the most electro negative element is
ns2np5
ns2np4
ns2np3
ns2np2
The general electronic configuration of the second transition series is
3d1-10 4s 1 or 2
4d1-10 5s 2
4d1-10 5s25p6
4d1-10 5s 1 or 2
The element with the highest first ionisation energy among the following is
Be
N
B
O
The property of Alkaline earth metals that increases with their atomic number is
Ionisation energy
Electronegativity
Solubility of their sulphates
Solubility of their hydroxides
The elements which form anions most readily are
Alkali metals
Halogens
Oxygen family
Nitrogen group
If 'x' denotes the number of valence electrons of an element, its valency equals
X
x-8
8-x
either (a) or (c)
Of the following the ion with the smallest ionic radius is
Ti 4+
K+
Ca2+
Ti3+
