# How many electrons can exist in an orbital?

This tells us that each subshell has double the electrons per orbital. The s subshell has 1 orbital that can hold up to

**2 electrons**, the p subshell has 3 orbitals that can hold up to 6 electrons, the d subshell has 5 orbitals that hold up to 10 electrons, and the f subshell has 7 orbitals with 14 electrons.A.

### How many electrons can be placed in the 2s sublevel?

The s sublevel has just one orbital, so can contain 2 electrons max. The p sublevel has 3 orbitals, so can contain

**6 electrons**max. The d sublevel has 5 orbitals, so can contain**10 electrons**max. And the 4 sublevel has 7 orbitals, so can contain**14 electrons**max.#### What is the maximum number of electrons that can occupy the third energy level?

Each principal energy level above the first contains one s orbital and three p orbitals. A set of three p orbitals, called the p sublevel, can hold a maximum of**six**electrons. Therefore, the second level can contain a maximum of**eight**electrons - that is,**two**in the s orbital and**6**in the three p orbitals.#### How many 2p electrons are in an atom of each element p?

The p orbital can hold up to**six**electrons. We'll put**six**in the 2p orbital and then put the next two electrons in the 3s. Since the 3s if now full we'll move to the 3p where we'll place the remaining**three**electrons. Therefore the Phosphorus electron configuration will be 1s^{2}2s^{2}2p3s^{6}^{2}3p.^{3}#### What are the p orbitals?

At the first energy level, the only**orbital**available to electrons is the 1s**orbital**, but at the second level, as well as a 2s**orbital**, there are 2p**orbitals**. A**p orbital**is shaped like 2 identical balloons tied together at the nucleus. The**orbital**shows where there is a 95% chance of finding a particular electron.

B.

### How many electrons are allowed in each shell?

Each shell can contain only a fixed number of electrons: The first shell can hold up to

**two electrons**, the second shell can hold up to eight (2 +**6**) electrons, the third shell can hold up to**18**(2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n^{2}) electrons.#### Which elements have only one valence electron?

A: Any element in**group 1**has just one valence electron.**Examples**include**hydrogen**(H),**lithium**(Li), and**sodium**(Na). Any element in**group 18**has eight valence electrons (except for**helium**, which has a total of just two electrons).**Examples**include**neon**(Ne),**argon**(Ar), and**krypton**(Kr).#### What atom has the electron configuration 2 8 5?

Electron structure of the first 20 elementsElement Atomic number Elec- trons in 1st shell Boron 5 2 Carbon 6 2 Nitrogen 7 2 Oxygen 8 2 #### How can you determine the number of electron shells in an atom?

Shell 2 (2S & 2P) and Shell 3 (3S & 3P) each hold**8 electrons**. After that, the next 2 hold**18**each, then the next 2 hold 32. So far, scientists haven't discovered any elements that use more orbitals than this. As for "how many shells the atom has," I already said that it has an infinite number of empty ones.

C.

### How many electrons does 5f hold?

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. Thus, the answer is B. Do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. Each orbital can hold

**two electrons**, so the capacity of an nf subshell is**14 electrons**.#### What is the maximum number of electrons in 2s?

Maximum number of orbitals in an energy level (n2)Principal Energy Level (n) sublevels electrons 1 1s 2 2 2s 2p 2 + 6 3 3s 3p 3d 2 + 6 +10 4 4s 4p 4d 4f 2 + 6 + 10 + 14 #### How many electrons can exist in an orbital?

This tells us that each subshell has double the electrons per orbital. The s subshell has 1 orbital that can hold up to**2 electrons**, the p subshell has 3 orbitals that can hold up to 6 electrons, the d subshell has 5 orbitals that hold up to 10 electrons, and the f subshell has 7 orbitals with 14 electrons.#### How many valence electrons are in a neutral atom of lithium?

Lithium has atomic number of 3. So a neutral lithium atom has 3 protons and**3 electrons**. Two electrons in shell 1 and one electron in shell 2.

Updated: 26th October 2019