b) Mosley & Newland
c) Mosley & Modern periodic law
d) Newland & Dobereiner
Answer : c
2. Horizontal rows in long form of periodic table is called _____ .
a) Group
b) Period
c) Both
d) None
Answer : b
3. Total number of group are present in long form of periodic table.
a) 16
b) 17
c) 18
d) 19
Answer : c
4. The general outermost electronic configuration of S-block element is _____ .
a) ns1
b) ns2
c) ns1,2
d) None of these
Answer : c
5. D block elements are also known as ____.
a) Inner transition elements
b) Transition elements
c) Lanthanides
d) Actinides
Answer : b
6. The distance between center of the nucleus and the outermost shell of electron is called ____ .
a) Atomic radius
b) Atomic size
c) Ionic size
d) Molecular size
Answer : a
7. In group atomic radius _____.
a) Decreases
b) Increases
c) Both
d) None of the above
Answer : b
8. In periodic table the elements which having maximum atomic radius _____ .
a) Na
b) K
c) Rb
d) Cs
Answer : d
9. The energy required to remove one electron is called the _____ .
a) First ionization potential
b) Second ionization potential
c) Third ionization
d) All of the above
Answer : a
10. Electron affinity of Noble gases is _____ .
a) 1
b) 2
c) 3
d)
Answer : d