Ionisation potential and electron affinity of fluorine are 17.42 and 3.45 eV respectively. What will be the ratio of electronegativity of fluorine on Mulliken scale and Pauling scale?
2.80 : 1
1.80 : 1
2.40 : 1
4.20 : 1
Ce3+, La3+, Pm3+ and Yb3+ have ionic radii in the increasing order as
La3+ < Ce3+ < Pm3+ < Yb3+
Yb3+ < Pm3+ < Ce3+ >La3+
La3+ = Ce3+ < Pm3+ < Yb3+
Yb3+ < Pm3+ < La3+ < Ce3+
Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point?
RbCl
KCl
NaCl
LiCl
In which of the following pairs does one elements exist as a solid and the other as a liquid under normal conditions ?
I2 and F2
I2 and Br2
Br2 and Hg
Na and Cs
Identify the correct order of solubility in aqueous medium
CuS > ZnS > Na2S
ZnS > Na2S > CuS
Na2S > CuS > ZnS
Na2S > ZnS > CuS
The set representing the correct order of ionic radius is
Li+ > Be2+ > Na+ > Mg2+
Na+ > Li+ > Mg2+ > Be2+
Li2+ > Na+ > Mg2+ > Be2+
Mg2+ > Be2+ > Li+ > Na+
Chloride ion and potassium ion are isoelectronic then
their sizes are same
Cl- ion is bigger than K+ ion
K+ ion is relatively bigger
their sizes depend on other cation and anion
Which one of the following is correct order of increase of size ?
Mg <Al< Na+ < F -
Na+ < Al < Mg < F -
Na+ < F - < Al < Mg
Na+ < F - < Mg < Al
Which one of the following is smallest in size ?
N3-
O2-
F -
Na+
The correct sequence which shows decreasing order of the ionic radii of the elements is
Al3+ > Mg2+ > Na+ > F - > O2-
Na+ > Mg2+ > Al3+ > O2- > F -
Na+ > F - > Mg2+ > O2- > Al3+
O2- > F - > Na+ > Mg2+ > Al3+
