There are 11 electrons in atom 11, the atomic number almost always corresponds with the number of electrons (unless it is an isotope)
about 16
30 electons
17 electrons.
The Answer is 4.....!
7 protons
One - assuming the atom is not an ion.
In one atom of Oxygen there are 8 electrons
60
it has 11 electrons
Six in the outer (2nd) shell
An oxygen atom has six (6) electrons in its outer shell.
Ionic