Nickel Ions and Atomic Structure

This video tutorial explains how to determine the number of protons and electrons in nickel ions, specifically Ni2+ and Ni3+, as well as in neutral nickel. It begins by identifying the atomic number of nickel from the periodic table, which is 28, and equates this to the number of protons. The video then explains that the number of electrons in a neutral atom equals the number of protons. For ions, the video demonstrates how to adjust the electron count based on the charge: Ni2+ has 26 electrons, and Ni3+ has 25 electrons. The tutorial concludes with a reference to additional resources for finding neutrons in nickel isotopes.

What is the main focus of the video?

• Finding the number of neutrons in nickel isotopes

• Discussing the chemical properties of nickel

• Calculating the number of protons and electrons in Ni2+, Ni3+, and neutral nickel

• Explaining the periodic table

What is the atomic number of nickel?

• 32

• 30

• 28

• 26

How many protons are present in a neutral nickel atom?

• 28

• 30

• 26

• 32

How does the number of electrons in Ni2+ compare to neutral nickel?

• It has two more electrons

• It has three fewer electrons

• It has two fewer electrons

• It has the same number of electrons

How many electrons are present in Ni3+?

• 26

• 27

• 28

• 25

What is the charge of Ni2+?

• 2-

• 2+

• Neutral

• 3+

What happens to the number of electrons when an atom becomes a positive ion?

• Electrons are gained

• Protons are lost

• Electrons are lost

• Protons are gained

Where can you find more information about the number of neutrons in nickel isotopes?

• In the video description

• In the periodic table

• In the video transcript

• In a chemistry textbook