Chemical Reactivity Quiz

Chemical reactivity is determined by the tendency of an element to lose or gain electrons

For metals, Greater the tendency to lose electrons, greater the reactivity

For non metal, Greater the tendency to gain electrons, greater the reactivity

Down a Group- For Metals Reactivity increases down the group because the bigger the atom, the further away the valence electron. Therefore, the attraction between the nucleus and the valence electron gets weaker (electrostatic force).

For Non Metals Reactivity decreases down the group The number of shells increases. The force with which the nucleus holds the electrons decreases, thus the tendency to lose electrons increases. Since nonmetals gain electrons to form a completely filled outermost shell,the reactivity decreases

The effective nuclear charge decreases because the shielding effect down the group increases.

Across a Period Reactivity first decrease and then increases since the tendency to lose electrons first decreases on going from left to right and then from P to Cl tendency to gain electrons increases, so reactivity increases then.

The attraction between the nucleus and the valency electron is known as the electrostatic force? true or false

• true

• false

What is the force known as the attraction between the nucleus and the valency electron?

• Electrostatic force

• Gravitational force

Is the attraction between the nucleus and the valency electron due to electrostatic force?

• Yes

• No