Which of the following elements you expect to have greater shielding effect?

There are total ___________ periods in the periodic table.

GROUP VII A is also called ____________.

The reduction of force of attraction between nucleus and valance electrons by the electrons present in the inner sub-shell is called ____________.

•The minimum amount of energy required to remove the outermost electron from an isolated gaseous atom is called _____________.

•GROUP II A is also called ___________.

The electronic configuration of an element is 1s², 2s², 2p⁴ . What is its period and group number.

Who discovered atomic number?

Periodic table is organized by arranging elements in the order of:

Elements exhibit a change in properties while moving in a:

Elements of Group B are called:

On the basis of valence sub-shell, periodic table is classified into how many  $BLOCKS$  ?

While moving in a _____________ , inner shells remain constant.

The atomic radius increases as we move:

Ionization energy explains _____________ formation.

Ionization energy increases as we move:

Which of the following GROUP have the highest electron affinity?

Which of the following remain CONSTANT as we move across a  $PERIOD$  ?

All the elements of group II-A are less reactive than I-A. This is because these elements have:

By looking at Group II-A, can you tell which of the following elements will have HIGHEST Ionization Energy? Remember the trend.

By looking at $PERIOD\ 2$ , can you tell which of the following element will have the SMALLEST atomic radius? 

Identify Group through following electronic configuration:  $1s^2\ 2s^2\ 2p^4$  

Identify PERIOD through following electronic configuration:  $1s^2\ 2s^2\ 2p^6\ 3s^23p^2$