# What elements are in the 3rd energy level?

## What elements are in the 3rd energy level?

Element Element Number Number of Electrons in each Level
3rd Level
Hydrogen 1
Helium 2
Lithium 3

## Does silicon have 3 energy levels?

Consider the element silicon (atomic symbol Si). Silicon is composed of 14 electrons, 14 protons, and (in most cases) 14 neutrons. In its ground state, silicon has two electrons in the n = 1 energy level, eight in the n = 2 energy level, and four in the n = 3 energy level, as shown on the energy diagram to the left.

What element has 3 electrons in the 3rd energy level?

Lithium
Lithium has 3 electrons; 2 of the 3 electrons occupy the s sublevel in principal energy level 1. The 3rd electron must go in the next available sublevel, 2s.

Which metalloid has 3 energy levels?

BORON FAMILY: All have 3 VALENCE ELECTRONS (electrons in the outer energy level) Boron is a METALLOID.

### What is the highest energy level of silicon?

third energy level
The Aufbau Principle states that electrons fill empty orbitals in order of increasing energy levels. In your case, the highest energy level that holds electrons in a silicon atom will be the third energy level.

### What is the only metalloid in Period 3?

Silicon (Si)
From the above data we may conclude that Silicon (Si) is the only metalloid in period 3 of the periodic table. Note: – Silicon is a chemical element denoted by the symbol Si and has atomic number 14.

Does germanium have 4 energy levels?

Germanium is in the same family with the elements carbon and silicon. They all have four electrons in their outer shell. The orbital structure for germanium is 2-8-18-4.

Which element has 3 valence electrons?

Lithium has 3 electrons — 2 in the first shell, and 1 in the second shell (so one valence electron). Beryllim has 4 electrons — 2 in the first shell, and 2 in the second shell (so two valence electrons). Boron has 5 electrons — 2 in the first shell, and 3 in the second shell (so three valence electrons). Carbon has 6 electrons — 2 in the first shell, and 4 in the second shell (so four valence electrons).

#### What do elements have three valence electrons?

Aluminum s2p1 has 3 valence electrons and an oxidation state of +3 or Al+3. Oxygen s2p4 has 6 valence electrons and an oxidation state of -2 or O−2. The common multiple of 2 and 3 is 6. We will need 2 aluminum atoms to get a +6 charge and 3 oxygen atoms to get a -6 charge.

#### What are the energy levels of the periodic table?

Hydrogen and helium are in the first row, or period, on the periodic table. Therefore, the first energy level can have a total of two electrons. The second energy level can have eight electrons. The third energy level can have a total of 18 electrons. The fourth energy level can have 32 electrons.

What are the energy levels in chemistry?

Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Electrons are tiny, negatively charged particles in an atom that move around the positive nucleus at the center. Energy levels are a little like the steps of a staircase.