Question

Explain with reason why non metallic character decreases down a group

Answer 1

Answer:

non metallic characters refers to tendency to gain electrons

As we move down in a group new shells were added and thus tendency to lose elecrons increase to fill its octet

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Answer 2

Answer:

Nonmetals tend to gain electrons in chemical reactions and have a high attraction for electrons within a compound. The most reactive nonmetals reside in the upper right portion of the periodic table. The noble gases are a special group because of their lack of reactivity. However, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element.

Trends in the Metallic Behaviour of Elements

Reactivity of metals is based on processes such as the formation of halide compounds with halogens. We can also determine it on the basis of how easily a metal displaces hydrogen from dilute acids.

The metallic character increases as you go down a group. Since the ionization energy decreases going down a group (or increases going up a group), the increased ability for metals lower in a group to lose electrons makes them more reactive.

In addition, the atomic radius increases going down a group, placing the outer electrons further away from the nucleus and making that electron less attracted by the nucleus. Thus, metals become more reactive as we go down the group.

So non metallic character decreases down the group.

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