This is a chemical element. You can find the how many electron in a single atom by using a Periodic Table.
One electron in outermost energy level.
6 electrons
One electron.
Cesium, or Cs, has 1 valence electron.
One electron in 3s orbital of sodium
An energy level is the fixed amount of energy that a system described by quantum mechanics, such as a molecule, atom, electron, or nucleus, can have. There are no full energy levels in an atom of hydrogen. The first energy level of any atom can hold 2 electrons. Hydrogen only has one electron and it is in the first energy level.
It needs to lose one electron so that it can have 8 electrons in its outer orbital
I had a science question that asked: An electron ______ is the chemical symbol for the element surrounded by as many dots as there are electrons in its outer energy level. That is pretty much the same as yours. I put dot diagram... Meaning electron dot diagram
Calcium atoms have two electrons in the s orbital of their outermost energy level. Their electron configuration is [Ar]4s2.
Only 1 electron needed to make H stable.
The halogens have 7 electrons in their outer shell desparate to gain the 1 electron to make a full shell of 8 electrons.
it has 2 because the first energy level has 1