What is the symbol of Calcium?
a) K
b) CA
c) Ca
d) Cm
How many electron/s is/are present in the valence shell of Beryllium? Its atomic No. is 4.
a) 1
b) 2
c) 3
d) 11
How many electron/s is/are present in the valence shell of Magnesium? Its atomic No. is 12.
a) 1
b) 12
c) 2
d) 11
How many electron/s is/are present in the valence shell of Calcium? Its atomic No. is 20.
a) 1
b) 2
c) 8
d) 20
Location of an element in the periodic table largely depends on its…………
a) neutrons
b) protons
c) electrons
d) all of these
Which of the following property of an element determines its group No.?
a) total no. of electrons
b) valence electrons
c) total no. of protons
d) proton and neutron
