Oxygen. Two of the electrons are in the first shell. The other six of them are in the second shell.
An octet of electrons is when the outermost electron shell of an atom contains eight electrons.
An Oxygen atom consists of eight electrons. The total number of protons will always match the number of electron.
It contains protons and neutrons and no electrons.
16 electrons
The most valence electrons an atom can contain is eight.
In an atom of magnesium, the valence electrons are found in the 3s sublevel. Magnesium has an atomic number of 12, which means it has two electrons in the 1s sublevel, two in the 2s, and eight in the 2p, leaving two electrons in the 3s sublevel as its valence electrons.
An oxygen atom has always 8 electrons (unless it's an ion where it has picked up 2 electrons and carries a -2 charge).In an O2 molecule there are 2*8 = 16 electrons and in an O3 molecule there are 3*8 = 24 electrons.
Every oxygen atom has eight electrons.
There are eight electrons in the third level of a chromium atom.There are four level in the chromium atom, and the fourth level, unfilled, contains 6 out of 18 electrons, in the neutral, non-ionized atom.
Every oxygen atom has eight electrons.
A neutral fluorine atom contains 9 electrons.
A neutral atom of fluorine contains 7 valence electrons.