Argon has 10 core electrons. Subtract the amount of valence electrons from your total amount of electrons. 18-8= 10
Hydrogen has 1 valence electron. Bromine has 7 valence electrons. When hydrogen and bromine react, the bromine atom 'steals' the hydrogen atom's only electron. The hydrogen atom then has no electrons and the bromine atom has 8 valence electrons. The two atoms are now ions because their number of protons does not equal their number of electrons. The bromine atom is now a bromide anion and the hydrogen atom is now a hydrogen cation (a proton). The two ions remain together, ionicly bonded and together are called hydrogen bromide.
The energy of the valence electrons is greater then the energy of the core electrons.APEX
In water molecules there are 2 atoms of hydrogen of and 1 atom of oxygen present. each hydrogen atom shares 1 electron with the oxygen atom. So the total number of electrons shared with oxygen are 2,total no. of electrons shared by hydrogen is 2 and the total no. of electrons shared by each hydrogen atom is 1.
out
Oxygen as 2 core electrons and 6 valence electrons.
Oxygen has 6 core electrons.
Germanium has 28 core electrons.
Tin has 46 core electrons.
Oxygen as 2 core electrons and 6 valence electrons.
Nitrogen atoms have two core electrons.
Oxygen has 6 core electrons.
Silicon has a total of 10 core electrons and 4 valence electrons.
The hydrogen ion H+ is without electrons.
Hydrogen has only one valence electrons.
2,8,18,7... 28 core electrons 7 valence electrons.
Hydrogen shares its electrons to complete the octate so it gains 1 electrons. it can also its electrons.