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Chemistry

Grade-9

Easy

Question

Elements with a full outer energy shell that belong to Group 18 are known as ___.

Noble gasses

Noble gasses

Halogens
Metalloids
Metals

hint Hint:

Noble gases has fulfilled valence shell.

The correct answer is: Noble gasses

Noble gasses

Elements with a full outer energy shell that belong to Group 18 are known as noble gases.

Elements with one electron less than fulfilled orbital belong to group 17 are known as halogens.

Metalloids are elements with both metal and non metal properties.

Metals are placed on the left side in the periodic table.

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