The element which has greatest difference between first and second ionization energy is
Na
Mg
Si
P
In halogens _________ increases from fluorine to Iodine.
Electro negativity
Oxidising power
First ionization enthalpy
Bond length
The correctly matched combination is
C-cl bond length→0.176nm
Ionic radius of F- →0.095nm
C-C bond length → 0.077nm
Ionic radius of Na+→0.0136 nm
Out of the following ________ is not isoelectronic.
Mg2+
Cl-
Na+
O2-
Out of the following electronic configurations in the outermost shell the one characteristic of alkali metals is
(n-1) s2p6,ns2p1
(n-1) s2p6,ns1
(n-1) s2p6d10, ns1
ns2p6d1
The Size of I, I+ and I- follow the order
I+> I-> I
I-> I+ >I
I-> I>I+
I+>I>I-
Similar chemical properties of Zr and Hf may be attributed to
Similar atomic radii
Inert pair effect
Identical ionization energies
similar electronic configuration
Amongst the following elements, whose electronic configuration are given below, the one having the highest ionisation energy is
[Ar] 3d104s24p3
[Ne] 3s23p2
[Ne] 3s23p3
[Ne] 3s23p1
On Pauling electronegativity scale, the element nearest to fluorine is
N
O
Ne
Cl
The property of Alkaline earth metals that increases with their atomic number is
Ionisation energy
Electronegativity
Solubility of their sulphates
Solubility of their hydroxides
