Question

) X, Y and Z are the elements of a Dobereiner’s triad.
If the atomic mass of X is 9 and Z is 42, what should be the atomic mass of Y?

Answer 1

Explanation:

Chemical reaction: It is a change in which one or more reactant reacts to form a new product with entirely different properties.

Compounds: It is a pure substance that is made up of two or more elements and chemically combined with one each other in a fixed proportion of mass.

Radicals: Radicals are the separate parts of the molecule of a compound.

Element: It is a substance that can neither be formed from two or more simpler substances not be broken down by any physical or chemical methods.

Physical change: It is a change in which the chemical composition of the substance doesn't change.

Answer 2

Answer:

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Explanation:

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