Question

H2 symbol stands for
2H symbol stands for
2H2 symbol stands for

Answer 1

Answer:

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What do the following symbols stand for?(a) H (b)H2 (c)2H

The number after the element tells how many atoms are there. H2 means two hydrogen atoms. O2 means two oxygen atoms.

The number before the element is the number of molecules. 2H2 means two molecules of hydrogen and four hydrogen atoms. 2Mg means 2 Magnesium molecules.

Some elements on their own go “alone” most metals for example: Mg, Ca….

Other elements usually not metals go in pairs H2, O2, S8.

It depends on the electrons in the last layer

Answer 2

Answer:

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H2 symbol stands for

2H symbol stands for

2H2 symbol stands for

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$\huge\purple\star\underline\mathfrak\red{H2 :-}\purple\star$

H2 means two hydrogen atoms

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2H means two Hydrogen molecules

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2H2 means two molecules of hydrogen and four hydrogen atoms.