In a given period, the alkali metals have _________
Lowest ionization energy
Smallest atomic size
Highest electron affinity
Lowest density
The element which forms an amphoteric oxide is
Barium
Calcium
Chlorine
Beryllium
The physical properties of vanadium are more closely related to that of
Titanium
Tungsten
Niobium
Nobelium
On the basis of group valencies, the formula of the compound formed between tin and fluorine is
SnF3
SnF4
SnF6
SnF
The element which does not belong to the first transition series is
Ag
Fe
Cu
V
On descending a group in the periodic table
Metallic character of elements increases
Electro negativity of elements increases
Ionization energy of elements increases
Size of elements decreases
Diagonal relationship is shown by
f- block elements
elements of second period
d- block elements
elements of first period
Which of the following contains maximum number of unpaired electrons ?
Co
Ni
Cr
Out of the following ________ is not isoelectronic
Mg2+
Cl-
Na+
O2-
In halogens,which of the following increases from fluorine to iodine ?
Electro negativity
Oxidising power
First ionization enthalpy
Bond length
