2 electrons
1st shell: 2 electrons, 2nd shell: 8 electrons, 3rd shell: 8 electrons, 4th shell: 4 electrons, 5th shell: 0 electrons, 6th shell: 0 electrons.
There are 7 electrons in the outer shell of fluorine. Fluorine has 9 total electrons, with 2 in the first shell and 7 in the outer shell.
2 valence electrons for helium (helium has only 1 shell)
How many* and it has 1 electron in it's outer shell, and only has the 1 shell.
there are 36 electrons in a valence shell. -cmoney
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Eight electrons in the 2nd shell of Br- This is also the number of electrons in the 2nd shell of I-, Cl- and even F- !
Shell 1: Two electrons Shell 2: Eight electrons Shell 3: Eight electrons Shell 4: Eighteen electrons
There are 8 electrons in an O shell. The O shell is the second energy level in an atom, and it can hold a maximum of 8 electrons.