# How many electrons are in the 2nd energy level of phosphorus?

## How many electrons are in the 2nd energy level of phosphorus?

there are 2 electrons at the first energy level, and 8 at the second energy level. there are 15 electrons in total, there must be 5 electrons at the third energy level.

## How many electrons are there in the 3nd principal energy level N 3 of a phosphorus atom?

Above that, the third energy level can hold up to 18 electrons.

How many electron energy levels does phosphorus have?

So… for the element of PHOSPHORUS, you already know that the atomic number tells you the number of electrons. That means there are 15 electrons in a Phosphorus atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and five in shell three.

How many electrons can be held in the 2nd level?

Energy Level (Principal Quantum Number) Shell Letter Electron Capacity
2 L 8
3 M 18
4 N 32
5 O 50

### How many electrons are there in the 2nd principal energy level N 2 of an aluminum atom?

eight electrons
Aluminum has 13 electrons so it will have the electron arrangement (2, 8, 3) which represents two electrons in the n=1 energy level, eight electrons in the n=2 level, and three electrons in the n=3 level. Aluminum has three valence electrons (indicated by the three electrons in the n=3 level).

### What is the total number of electrons in the 2nd principal energy level of a nitrogen atom atomic number 7 )?

Nitrogen has 7 electrons — 2 in the first shell, and 5 in the second shell (so five valence electrons). Oxygen has 8 electrons — 2 in the first shell, and 6 in the second shell (so six valence electrons). Fluorine has 9 electrons — 2 in the first shell, and 7 in the second shell (so seven valence electrons).

How many electrons are in the second energy level of N?

Two is the maximum number of electrons for the level so the other electrons will have to go in higher energy levels. The n=2 level can hold up to eight electrons so the next 8 electrons will go in the n=2 level. The remaining 7 electrons can go in the n=3 level since it holds a maximum of 8 electrons.

How many stable electrons does phosphorus have?

Hence, phosphorus gains 3 electrons/forms an anion in order to achieve a stable electron configuration.

## Why can the second energy level only hold 8 electrons?

Because the first shell can only hold a maximum of 2 electrons, the third electron must go into the second shell. The 2s subshell holds a maximum of 2 electrons, and the 2p subshell holds a maximum of 6 electrons. This means that the second shell can hold a maximum of eight electrons (2+6=8).