The atomic numbers of Al, Na and Be respectively are:

13, 11 and 4

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11, 13 and 4

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13, 11 and 6

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13, 6 and 11

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Solution

The correct option is A
13, 11 and 4

Atomic number is the number of electrons or the number of protons in an atom. The atomic numbers of Al, Na and Be are 13, 11 and 4 respectively.

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Similar questions

The atomic numbers of Al, Na and Be respectively are:

A l

C l

13

17

A l^{3 +}

C l^{-}

Which of the following is the correct sequence for atomic radii

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