Fill in the blanks — task. Science Test Space, Class 8.

1. Calcium and argon are examples of a pair of .

2. Total Number of electrons that can be accommodated in an orbit is given by .

3. isotope is used in the nuclear reactors.

4. The number of neutrons present in \(_{3}\textrm{Li}^{7}\) .

5. The valency of Argon is .

Did you find an error?

5. Fill in the blanks