What is the difference between the number of electrons in an atom of selenium,Se, and the number of electrons in an atom of aluminum,Al? A)21 B)17 C)8 D)14

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asked Jun 17, 2020 176k views

2 Answers

Robert Siemer · Answer 1 · 2020-06-21T09:15:07+0000

Answer:

A)21

Step-by-step explanation:

To know the difference between the number of electrons in the two atoms, we must first know the number of electrons in the atoms.

For Selenium, Se, we have 34 electrons. The element is in group 6 on the periodic table.

Aluminum on the other hand is in the Boron family with a total of 13 electrons.

The difference,( 34-13) electrons gives a total of 21 electrons