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Q2 of 40 Page 128

Isotopes of an element have the different atomic numbers.

False

Isotopes of elements have different mass numbers.

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5

The correct electronic configuration of potassium is

1

In an atom, electrons revolve around the nucleus in fixed orbits.

3

Electrons have negligible mass and charge.

4

Smaller the size of the orbit, lower is the energy of the orbit.

Questions · 40

5. Atomic Structure

1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 1 1 1 1 1 1 2 3 4 5 1 2 3 4 5 1 2 3 1 2 3 1 2 3

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