
How many valence electrons does phosphorus have?
Answer
489.9k+ views
Hint: Electrons which are present in the outermost shell of the atom are known as valence electrons and for the calculation of the number of valence shell electrons we should know about the electronic configuration of the atom.
Complete Solution :
Symbolically Phosphorous is denoted as ‘ ’ in the periodic table and its atomic number is 15.
-As we know that the atomic number of an atom is always equal to the number of protons present inside the nucleus or number of electrons present in the orbitals outside the nucleus.
i.e. Atomic Number = No. of protons = No. of electrons
-So, the number of electrons in the Phosphorus atom is 15 because it is present in the neutral state.
-Electronic configuration of Phosphorus is shown as follow:
Hence, from the above given configuration it is clear that the number of valence electrons in the Phosphorus atom is five.
Additional information-
Phosphorus is present in the VA group of the periodic table and it is a non – metal. Chemically it is reactive in nature that’s why it is not present in a free state. Its appearance is white and red because it is present in two forms as white phosphorus and red phosphorus respectively in nature.
Note: Here some of you may do wrong calculation if you only count p-orbital electrons and leave s-orbital electrons. During the calculation of valence electrons always add electrons present in the s-orbital as well as in p-orbital of the outermost shell.
Complete Solution :
Symbolically Phosphorous is denoted as ‘
-As we know that the atomic number
i.e. Atomic Number = No. of protons = No. of electrons
-So, the number of electrons in the Phosphorus atom is 15 because it is present in the neutral state.
-Electronic configuration of Phosphorus is shown as follow:
Hence, from the above given configuration it is clear that the number of valence electrons in the Phosphorus atom is five.
Additional information-
Phosphorus is present in the VA group of the periodic table and it is a non – metal. Chemically it is reactive in nature that’s why it is not present in a free state. Its appearance is white and red because it is present in two forms as white phosphorus and red phosphorus respectively in nature.
Note: Here some of you may do wrong calculation if you only count p-orbital electrons and leave s-orbital electrons. During the calculation of valence electrons always add electrons present in the s-orbital as well as in p-orbital of the outermost shell.
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
Which one is a true fish A Jellyfish B Starfish C Dogfish class 11 biology CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

How much is 23 kg in pounds class 11 chemistry CBSE

Net gain of ATP in glycolysis a 6 b 2 c 4 d 8 class 11 biology CBSE
