Second period ends with __________.

The second period contains _________ elements .

Li : Second period : : Al : _______

Li : Second period : : Al : _______

Both second and third period contain ____________.

Adolescent period ends in the …………year of age.

The time period of a seconds pendulum is ______ s.

In modern periodic table each periodic ends with

The second period elements show anomalous behaviour. a) Give reason. b) What are the anomalous properties of second period elements?

A simple pendulum, whose time period is _______ seconds, is called a seconds pendulum.