Question

elements As,Na,Si,Mg which belong to third period possesses both metallic and non metallic character?​

Answer 1

Answer:

Na,Mg belongs to third period

Answer 2

Out of As, Na, Si and Mg elements which possesses metallic and non metallic property both

Explanation:

• Among As, Na, Si and Mg, Na is an alkali metal which have purely metallic character such as they are hard, ductile and malleable in nature, shiny etc. Alkali metals are pure metals possesses only metallic character.
• Element Mg i.e. Magnesium is an element of  alkaline earth metal group which shows metallic character just like alkali metals. Alkali metals have more metallic character.
• Element As i.e. Arsenic is best classified as non metal. Therefore it possesses non metallic character such as they are soft, not shiny, not ductile and not malleable etc.
• Element Si i.e. Silicon is a metalloids which is neither a metal nor a non metal but it possesses property of metals as well as non metals. They are known as semiconductors.

Therefore, element Si possesses both metallic and non metallic nature.