# Number Of Valence Electrons In Sodium

Sodium now has 8 valence electrons. Are the outermost electrons and are the ones involved in. An example of an atom with 3 valence electrons is. Sodium magnesium aluminum. The first step in creating a Lewis structure is to determine the total number of valence electrons for the entire molecule. The valence shell electron pair repulsion (VSEPR) model.

Sodium has 11 electrons. The first two fill the innermost energy level. The second energy level is also full, holding eight electrons and one electron remaining in the outer energy level. It is the number of outer electrons that give an element its chemical properties. Keeping this in view, how many energy levels does sodium have?

Period 3. Explain that sodium has 11 protons and 11 electrons. There are 2 electrons on the first energy level, 8 electrons on the second level, and 1 electron on the third energy level. Explain that the second energy level can only have 8 electrons so the next electron in sodium has to be on the next (third) level.

Secondly, what is an energy level on the periodic table? Energy LevelsIt is the outermost electrons that determine the chemical properties of the element. In looking at a diagram of an atom, note that the nucleus is fairly centrally located. The energy levels are built up from the level closest to the nucleus outward.

Similarly one may ask, how many energy levels does beryllium have?

## Number Of Valence Electrons In Sodium Ion

So for the element of BERYLLIUM, you already know that the atomic number tells you the number of electrons. That means there are 4 electrons in a beryllium atom. Looking at the picture, you can see there are two electrons in shell one and two in shell two.

Why does sodium have 12 neutrons?

## N Element Valence Electrons ## Quantum Number Of Valence Electrons In Sodium

It's because sodium atoms each have 11 protons, with a mass of 1, and 12 neutrons, with a mass of 1. Answer 3: Most sodium atoms contain twelve neutrons.