Question

ᴡʜᴀᴛ ᴀʀᴇ ʀᴇᴀᴄᴛᴀɴᴛꜱ?​

ᴡʜᴀᴛ ɪꜱ ᴠᴀʟᴇɴᴄy?​​​

Answer 1

reactant

a substance that takes part in and undergoes change during a reaction.

valency

In chemistry, the valence or valency of an element is the measure of its combining capacity with other atoms when it forms chemical compounds or molecules.

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Answer 2

ᴡʜᴀᴛ ᴀʀᴇ ʀᴇᴀᴄᴛᴀɴᴛꜱ?

❥The elements or compounds that take part in a chemical change (or a chemical reaction) are called reactants.

The rearrangement of the elements form new compounds in the reaction.These are called products.

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ᴡʜᴀᴛ ɪꜱ ᴠᴀʟᴇɴᴄy?

❥The valency of an element or a group denotes it's combining capacity.

We take the valency of Hydrogen as 1.

The valencies of other elements/groups is the number of Hydrogen atoms which can combine with or be displaced by one atom of that element/group.

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