Describe the relationship between the energy of an electron and its probable distance away from the nucleus of an atom

The energy of an electron depends on its location with respect to the nucleus of an atom.

Explanation:

The higher the energy of an electron in an atom, the farther its most probable location from the nucleus.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

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explanation: