Which of the following would have the largest ionization energy:
a) Na
b) Al
c) H
d) He
Elements in a…………have similar chemical properties:
a) period
b) group
c) both a and b
d) none of these
An element has 8 electrons in its valence shell. It is a member of:
a) alkali family
b) halogen family
c) noble family
d) carbon family
Shielding effect is due to:
a) neutron
b) proton
c) proton and neutron
d) inner shell electron
