
Number of electrons in the valence orbital of nitrogen in an ammonia molecule are
A) 8
B) 5
C) 6
D) 7
Answer
162k+ views
Hint: We know that an atom has many shells where the electrons are present. The shells are named as K, L, M, N etc. And the outermost shell of atoms is named as valence shell. And the electrons in the valence shell are named as valence electrons.
Complete step by step solution:Let's discuss how to count the valence electrons present in an atom. For that, we must know the atomic number of the atom. Let's understand with the help of an example. Oxygen atom has an atomic number of 8. So, its electronic configuration is 2,6. So, the outer shell has six electrons.
Similarly, we have to calculate the electrons of the valence shell of the nitrogen atom. A Nitrogen atom has the atomic number of 7. So, the configuration of nitrogen atoms is 2,5. So, we find that five electrons are present in the valence orbital of nitrogen atoms.
Let's discuss the ammonia molecule in detail. Ammonia has the formula of . The N atom has five numbers of valence electrons and three hydrogens have one hydrogen atom each. Nitrogen atom shares three numbers of electrons with three atoms of hydrogen and completes its octet. Therefore, three covalent bonds formed and one electron pair remain as lone pairs.
Hence, the valence orbit of the nitrogen atom has five numbers of valence electrons.
Hence, option B is right
Note: Always remember that, a covalent bond is formed because of the share of electrons between them. The electrons when shared help to achieve octet and stabilize the compound. The electrons that do not take part in the bond formation are lone pairs.
Complete step by step solution:Let's discuss how to count the valence electrons present in an atom. For that, we must know the atomic number of the atom. Let's understand with the help of an example. Oxygen atom has an atomic number of 8. So, its electronic configuration is 2,6. So, the outer shell has six electrons.
Similarly, we have to calculate the electrons of the valence shell of the nitrogen atom. A Nitrogen atom has the atomic number of 7. So, the configuration of nitrogen atoms is 2,5. So, we find that five electrons are present in the valence orbital of nitrogen atoms.
Let's discuss the ammonia molecule in detail. Ammonia has the formula of . The N atom has five numbers of valence electrons and three hydrogens have one hydrogen atom each. Nitrogen atom shares three numbers of electrons with three atoms of hydrogen and completes its octet. Therefore, three covalent bonds formed and one electron pair remain as lone pairs.
Hence, the valence orbit of the nitrogen atom has five numbers of valence electrons.
Hence, option B is right
Note: Always remember that, a covalent bond is formed because of the share of electrons between them. The electrons when shared help to achieve octet and stabilize the compound. The electrons that do not take part in the bond formation are lone pairs.
Recently Updated Pages
Two pi and half sigma bonds are present in A N2 + B class 11 chemistry JEE_Main

Which of the following is most stable A Sn2+ B Ge2+ class 11 chemistry JEE_Main

The enolic form of acetone contains a 10sigma bonds class 11 chemistry JEE_Main

The specific heat of metal is 067 Jg Its equivalent class 11 chemistry JEE_Main

The increasing order of a specific charge to mass ratio class 11 chemistry JEE_Main

Which one of the following is used for making shoe class 11 chemistry JEE_Main

Trending doubts
JEE Main Eligibility Criteria 2025

NIT Delhi Cut-Off 2025 - Check Expected and Previous Year Cut-Offs

JEE Main Seat Allotment 2025: How to Check, Documents Required and Fees Structure

JEE Mains 2025 Cut-Off GFIT: Check All Rounds Cutoff Ranks

NIT Durgapur JEE Main Cut-Off 2025 - Check Expected & Previous Year Cut-Offs

JEE Main 2024 Cut-off for NIT Surathkal

Other Pages
JEE Advanced 2025: Dates, Registration, Syllabus, Eligibility Criteria and More

Degree of Dissociation and Its Formula With Solved Example for JEE

Free Radical Substitution Mechanism of Alkanes for JEE Main 2025

JEE Advanced 2025 Notes

List of Fastest Century in IPL History

Verb Forms Guide: V1, V2, V3, V4, V5 Explained
