Enter the number of electrons in each energy level (shell) for the elements. If the energy...

Enter the number of electrons in each energy level (shell) for the elements. If the energy level does not contain any electrons, enter a zero.

n=1 n=2 n=3 n=4

1. He

2.F

3. Mg

4.Ca

What is the neutral atom that has its first two energy levels filled, has 7 electrons in its third energy level, and has no other electrons? Enter the name of the element, not the abbreviation.

Expert Solution

queen_honey_blossom answered 2 years ago

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