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How many orbits are contained in an atom with atomic number 13?


Question

How many orbits are contained in an atom with atomic number 13?

Options

A) 7

B) 6

C) 5

D) 3


The correct answer is D.

Explanation:

An orbit is a well-defined circular path followed by electron around nucleus. It represents two dimensional motion of electron around nucleus. The maximum no. of electrons in an orbit is 2n2. Aluminium has three electron shells with 2, 8, 3 electrons each.

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Dicussion (1)

  • An orbit is a well-defined circular path followed by electron around nucleus. It represents two dimensional motion of electron around nucleus. The maximum no. of electrons in an orbit is 2n2. Aluminium has three electron shells with 2, 8, 3 electrons each.

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