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Structure of an Atom

Statement 1 :...

Question

Statement 1 : The atomic number of a neutral atom that has a mass of $39$ and has $19$ electrons is $19$ .
Statement 2: The number of protons in a neutral atom is equal to the number of electrons.

A

Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

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B

Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.

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C

Statement 1 is correct but Statement 2 is not correct.

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D

Statement 1 is not correct but Statement 2 is correct.

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E

Both the Statement 1 and Statement 2 are not correct.

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Solution

The correct option is A
Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

The number of protons and electrons are equal to the atomic number of neutral atom. Number of electrons of an atom is $19$ so it has $19$ protons and the atomic number is $19$ too.

Hence, the correct option is A.

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