Understanding Nitrogen Ions and Electrons

This video tutorial explains how to determine the number of protons and electrons in the nitride ion (N3-). It begins by examining neutral nitrogen on the periodic table, noting that its atomic number is seven, which equals the number of protons. The video then explains that in ions, the number of electrons differs from the neutral atom. For the N3- ion, there are three extra electrons, resulting in a total of ten electrons. The tutorial concludes by emphasizing the concept of ionic charge and how gaining or losing electrons affects an atom's charge.

What is the charge of the nitride ion (N3-)?

• Positive

• Negative

• Neutral

• Variable

What does the atomic number of an element represent?

• Number of neutrons

• Number of protons

• Number of electrons

• Number of ions

How many protons does a neutral nitrogen atom have?

• 8

• 6

• 7

• 5

In a neutral nitrogen atom, how does the number of electrons compare to the number of protons?

• Fewer electrons than protons

• More electrons than protons

• No electrons

• Equal number of electrons and protons

How many electrons does the N3- ion have?

• 10

• 9

• 8

• 7

How many extra electrons does the N3- ion have compared to a neutral nitrogen atom?

• 1

• 2

• 3

• 4

What is the significance of the '3-' in N3-?

• It indicates three extra protons

• It indicates three missing protons

• It indicates three extra electrons

• It indicates three missing electrons

What happens to an atom when it gains an electron?

• It loses a proton

• It becomes negatively charged

• It becomes positively charged

• It remains neutral

What is the result of an atom losing an electron?

• It gains a neutron

• It becomes positively charged

• It remains neutral

• It becomes negatively charged