500
As you move down a group or column in the periodic table, the number of energy levels or shells increases. Each row in the periodic table represents a different energy level, with elements in the same row having the same number of electron shells.
There are four energy shells. The levels go: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10. This is because there are 30 electrons.
Each period in the periodic table corresponds to the number of electron shells an element's atoms possess. As you move from left to right across a period, the number of protons increases gradually, resulting in a corresponding increase in the number of electron shells.
Bromine has 4 energy shells.
Silicon has 3 energy shells.
As you move down a group or column in the periodic table, the number of energy levels or shells increases. Each row in the periodic table represents a different energy level, with elements in the same row having the same number of electron shells.
Elements in the same row, or period, of the periodic table fill up the same energy level as you move from left to right. This is because elements in the same period have the same number of electron shells.
2 8 2
Lead has six energy levels. It has an atomic number of 82 which is also equivalent to the number of protons and electrons.
There are four energy shells. The levels go: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10. This is because there are 30 electrons.
Fermium has seven electron shells.
Each period in the periodic table corresponds to the number of electron shells an element's atoms possess. As you move from left to right across a period, the number of protons increases gradually, resulting in a corresponding increase in the number of electron shells.
To determine if shotgun shells are made of steel or lead, you can use a magnet. Steel shotgun shells will be attracted to the magnet, while lead shotgun shells will not.
Bromine has 4 energy shells.
Silicon has 3 energy shells.
As you go down the horizontal rows, the energy levels increase.
Sodium has 3 energy levels, 1s, 2s, 2p, and 3s.