Nitrogen and Valence Electrons Concepts

This video tutorial explains how to determine the number of valence electrons in a nitrogen atom. Two methods are discussed: using the periodic table and writing the electron configuration. Nitrogen, found in group 15 of the periodic table, has 5 valence electrons. The electron configuration method confirms this by showing the distribution of electrons across energy levels, resulting in 5 valence electrons in the outermost shell. The video concludes by summarizing these methods.

What are valence electrons?

• Neutrons in the nucleus

• Protons in the nucleus

• Electrons in the outermost shell

• Electrons in the innermost shell

Which group in the periodic table does nitrogen belong to?

• Group 5

• Group 18

• Group 15

• Group 1

How many valence electrons does nitrogen have according to the periodic table?

• 7

• 5

• 8

• 3

What is the atomic number of nitrogen?

• 7

• 8

• 6

• 5

What is the electron configuration of nitrogen?

• 1s2 2s2 2p4

• 1s2 2s2 2p5

• 1s2 2s2 2p3

• 1s2 2s2 2p2

How many electrons are in the highest energy level of nitrogen?

• 5

• 2

• 3

• 7

What is the significance of the valence shell in an atom?

• It determines the atom's density

• It determines the atom's color

• It determines the atom's reactivity

• It determines the atom's mass