Which statement is true?

1. The electronegative nature of elements increases along the period

2. The electropositive nature of elements increases along the period

3. The chemical reactivity of elements increases along the period

4. The I.E  of element decreases along the period

Which of the electronic configuration of an atom has the lowest ionization enthalpy? 

1. 1s²,2s²2p⁵

2. 1s²,2s²2p³

3. 1s²,2s²2$p^6$,3s¹

4. 1s²,2s²2p⁶

Amongst the following electronic configurations, the highest ionization energy
is represented by:

1. [Ne]3s²3p³

2. [Ne]3s²3p²

3. [Ar]3d¹⁰4s²4p³

4. [Ne]3s²3p¹

Element that has the greatest tendency to lose an electron is :

In the long form of periodic table, the elements having lowest ionization potential are placed in:

1. I group

2. IV group

3. VII group

4. Zero group