How Many Valence Electrons Does phosphorus Have?

Answer:

Phosphorus has five valence electrons.

Explanation:

Now I am going to show you how many  valence electrons  phosphorus hydrogen have in just 5 steps.

             Step-1:

First, find the atomic number of phosphorus from periodic table.

From periodic table ,we see that the atomic number of phosphorus is 15.

                 Step-2:

We know that the atomic number of phosphorus is 15.So phosphorus has 15 protons and 15 electrons as the charge of electrons and protons are equal but opposite in nature.The charge of proton is +1 and the charge of electron is -1.

                Step-3:

Now write the electron configuration of phosphorus. 

P(15)=1s²2s²2p⁶3s²3p³

                Step-4:

P(15)=1s²2s²2p⁶3s²3p³

Now we will find out valence shell of phosphorus from the electronic configuration of  phosphorus.

P(15)=1s²2s²2p⁶3s²3p³

Valence shell can be found from the highest number of principal quantum number.You know that principal quantum number is expressed by n.

P(15)=1s²2s²2p⁶3s²3p³

Here the highest value of n is 3.SoThe valence shell of phosphorus is3s²3p³

                 Step-5

In this step,we will find out the valence electrons of phosphorus.

We have to know that the electrons of valence shell are called valence electrons.

P(15)=1s²2s²2p⁶3s²3p³

From the above electron 

configuration 

of phosphorus,we see 

that phosphorus has 5 

valence electron in its 

valence shell.

So there are five valence electrons of phosphorus.

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