The correct order of second ionisation enthalphy of C, N, O and F is
C>N>O>F
C>N>F>O
O>N>F>C
O>F>N>C
The pair in which ionization energy of the first species is less than that of the second is
N,P
N,N-
Be+, Be
S,P
The correct order of decreasing ionic character is
Bacl2> Mgcl2> Cacl2> Becl2
Cacl2> Mgcl2>Becl2>Bacl2
Bacl2> Cacl2>Mgcl2> Becl2
Bacl2> Becl2>Cacl2>Mgcl2
The block and period in the periodic table of the element having the IUPAC symbol Uub is
f- block, 7th period
d- block, 7th period
f- block, 8th period
p- block, 7th period
The species having highest ionization potential is
Ne
Mg+
Li+
Al+
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
The element Rutherfordium is a member of
Transition element
Inert gases
Alkali metals
Actinides
1300KJ energy was absorbed by one mole of Magnesium in the vapour state. If the first and second ionisation energies of Mg are 750 KJ Mol-1 and 1450 KJmol-1 respectively, the final composition of the mixture is likely to be
19% Mg+ and 81% Mg2+
38% Mg+ and 62% Mg2+
81% Mg+ and 19% Mg2+
62% Mg+ and 38% Mg2+
The element forming an acidic oxide is
C
Ca
Zn
Mg
Of the following pairs, the one containing a metalloid element is
F&Cl
Ca &Mg
As & Sb
Na & K
