Amongst the following elements, whose electronic configuration are given below, the one having the highest ionization energy is ____________
[Ar] 3d104s24p3
[Ne] 3s23p2
[Ne] 3s23p3
[Ne] 3s23p1
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
Number of liquid elements present in the periodic table is ______
2
3
14
36
The pair in which ionisation energy of the first species is less than that of the second is _______
N,P
N,N-
Be+, Be
S,P
The element which does not belong to the first transition series is
Ag
Fe
Cu
V
The correct order of decreasing ionic character is ________
Bacl2 >Mgcl2> Cacl2> Be cl2
Cacl2> Mgcl2>Becl2>Bacl2
Bacl2>Cacl2>Mgcl2> Becl2
Bacl2>Becl2>Cacl2> Mgcl2
Out of the following ________ is not isoelectronic
Mg2+
Cl-
Na+
O2-
Incompletely filled orbitals in representative elements are
d-only
f-only
both d and f
s and p
Which of the following contains maximum number of unpaired electrons ?
Co
Ni
Cr
Which is the lighest metal in the periodic table ?
Na
H
K
Li
