how many electrons does an atom need in its outer shell stable.?

0 ⤊

how many electrons does an atom need in its outer shell stable.?

plz help

2007-10-02 04:38:57 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

3 answers

in order to be stable an atom must have the same number of electrons as protons. Electrons have a -1 charge and protons have a +1 charge. The number of protons is dependent on the atomic number. example: if you have a stable atom of helium whose atomic number is two you will have two protons and two electrons

2007-10-02 04:44:18 · answer #1 · answered by ? 3 · 0⤊ 0⤋

Depends on the atom. For example, Lithium is the first element in the 2d period. It has 1 electron in the outer shell (the other 2 are in the 1st period shell). Neon is the last element in the 2d period, and has EIGHT electrons in the outer shell.

2007-10-02 11:49:45 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋

Check it out!

2007-10-02 11:41:20 · answer #3 · answered by Vanka 3 · 0⤊ 0⤋