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malfutka [58]
3 years ago
5

A single atom of an element has 21 nutrons 20 electtons and 20 protons which element is it

Chemistry
1 answer:
guajiro [1.7K]3 years ago
7 0

your element would be calcium


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Answer:

The correct answer is B.

Explanation:

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The ratio of masses are given as:

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This illustrates the law of definite proportions which is also known as law of constant compositions .

The law states that 'the elements combining to form compound always combine in a fixed ratio by their mass.'

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Law of multiple proportion states that when two elements combine with each other to form more than one compounds , the mass of one element with respect to the fixed mass of another element are in ratio of small whole numbers.

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

In a balanced chemical reaction ,total mass on the reactant side must be equal to the total mass on the product side.

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