Number of liquid elements present in the periodic table is
2
3
14
36
In a given period, the alkali metals have _________
Lowest ionization energy
Smallest atomic size
Highest electron affinity
Lowest density
The decreasing order of the second ionization potential of K, Ca and Ba is
K > Ca > Ba
Ca > Ba > K
Ba > K> Ca
K > Ba > Ca
Out of the following the atomic number of the element having highest vapour pressure at room temperature is
Z=25
Z=48
Z=30
Z=80
Out of the following ________ is not isoelectronic
Mg2+
Cl-
Na+
O2-
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
Fluorine has low electron affinity than chlorine because of _________.
Bigger radius of fluorine,less density
Smaller radius of chlorine, high density
Smaller radius of fluorine, high density
Smaller radius of chlorine, less density
Out of the following ions the smallest in size is
F-
N3-
On Pauling electronegativity scale, the element nearest to fluorine is?
N
O
Ne
CI
The attempt for classifying elements by plotting the atomic weights of elements against the volume was made by _______
Newland
Doebereinier
Mendeleev
Lother Meyer
