Which of the
following property of an element determines its period number?
a) total no of electrons
b) total no. of
protons
c) total no. of neutrons
d) total no. of shell
The n value of first shell in an atom is 1. What is the name of first shell?
a) K
b) L
c) N
d) M
The n value of second shell in an atom is 2. What is the name of second shell?
a) K
b) L
c) N
d) M
The n value of third shell of an atom is 1. What is the name of third shell?
a) K
b) L
c) N
d) M
How many maximum electrons can be accommodated in the K shell?
a) 2
b) 8
c) 18
d) 32
How many maximum electrons can be accommodated in the L shell?
a) 2
b) 8
c) 18
d) 32
