asked in category: General Last Updated: 1st May, 2020

# How many electrons are in the valence shell of phosphorus?

The highest-numbered shell is the third shell, which has 2 electrons in the 3s subshell and 3 electrons in the 3p subshell. That gives a total of 5 electrons, so neutral phosphorus atoms have 5 valence electrons. The 10 remaining electrons, from the first and second shells, are core electrons.

Just so, how many electrons does phosphorus have in its valence shell?

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.

Secondly, why is 3rd shell 8 or 18? 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. For an explanation of why electrons exist in these shells see electron configuration.

Keeping this in view, what is the number of valence electrons in phosphorus?

five valence electrons

What is the valence of phosphorus?

Answer and Explanation: The valency of phosphorus can be three or five. Phosphorous belongs to group 15 of the periodic table. All members of group 15 have five valence electrons.

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