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BECE Information and Communication Technology 2015 Paper

Question : 26

Total: 40

In the symbol

\mathrm{H_2O}

Solution:

Concept:

In a chemical formula, small numbers written below the line show how many atoms of an element are present.

Explanation:

\mathrm{H_2O}

, the

2

is written lower and smaller than the letters.

This position is called a subscript.

It shows that there are two hydrogen atoms in one molecule of water.

Answer:

C. subscript

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