Question

Classify each of the following as metal, non-metal and metalloids.
Selenium, Barium, Iodine, Phosphorous, Sodium, Silicon, Boron, Rubidium​

Answer 1

Answer:

(a) (i) Metals are elements that are malleable , ductile and conduct electricity.

Example : Aluminium and zinc

(ii) Non-metals are elements that are neither malleable nor ductile and they do not conduct electricity.

but most of the non-metals are brittle

Examples : Phosphorus and hydrogen

(iii) Metalloids are the elements that shows properties of both metals and non-metals.

Examples : Germanium and silicon.

(b) Metals - Mercury, Sodium

Non-metals - Diamond, Sulphur, Iodine, Carbon, Boron

Metalloids - Silicon, Germanium

Answer 2

Answer:

Selenium-- Metalloid

Barium-- Metalloid

Iodine-- Metalloid

Phosphorous-- Non metal

Sodium-- Metal

Silicon-- Metalloid

Boron-- Non metal

Rubidium-- Metal

Step-by-step explanation:

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