Ionic radii are
inversely proportional to effective nuclear charge
inversely proportional to square of effective nuclear charge
directly proportional to effective nuclear charge
directly proportional to square of effective nuclear charge
One of the characteristic properties of non-metals is that they
are reducing agents
form basic oxides
form cations by electron gain
are electronegative
Which one of the following arrangements does not truly represent the property indicated against it ?
Br2 < Cl2 < F2 : Oxidising power
Which of the following elements has maximum electron affinity ?
Cl
Br
I
F
Which block consists of elements of groups 3(IIIB),4(IVB),5(VB),6(VIB),7(VIIB),8,9,10(VIII),11(1B),12(IIB) ?
s
p
d
f
Correct order of Ist ionisation potential (IP) among following elements Be, B, C, N, O is
B < Be < C < O < N
B < Be < C < N < O
Be < B < C < N < O
Be < B < C < O < N
The ions are isoelectronic. Their ionic radii show
an increases from O2- to F- and then decrease from Na+ to Al3+
a decrease from O2- to F- and then increase from Na+ to Al3+
a significant increase from O2- to Al3+
a significant decrease from O2- to Al3+
The ionisation of hydrogen atom would give rise to
hybride ion
hydronium ion
proton
hydroxyl ion
Na+ , Mg2+ , Al3+ and Si4+ are isoelectronic. The order of their ionic size is
In crystals of which of the following ionic compounds would you expect maximum distance between centres of cations and anions ?
LiF
CsF
CsI
Lil
