Sodium Ions and Atomic Structure

This video tutorial explains how to determine the number of protons and electrons in the sodium ion (Na+). It begins by identifying neutral sodium on the periodic table, noting its atomic number of 11, which equals the number of protons. The video then discusses how ions differ from neutral atoms in terms of electron count. Specifically, it explains that the Na+ ion has lost one electron, resulting in 10 electrons. The tutorial concludes with a summary of these calculations.

What is the main focus of this video?

• Explaining the periodic table

• Discussing chemical reactions

• Finding the number of protons and electrons in Na+ ion

• Finding the number of neutrons in Na+ ion

What is the atomic number of neutral sodium?

• 12

• 10

• 11

• 13

How many protons does neutral sodium have?

• 12

• 11

• 13

• 10

What is the key difference between neutral atoms and ions?

• Number of electrons

• Number of neutrons

• Number of protons

• Atomic mass

What happens to an atom when it loses an electron?

• It becomes a negative ion

• It becomes a positive ion

• It gains a proton

• It remains neutral

What charge does an atom have when it gains an electron?

• Positive

• Neutral

• Double positive

• Negative

How many electrons does a neutral sodium atom have?

• 12

• 9

• 10

• 11

How many electrons are in a Na+ ion?

• 9

• 10

• 11

• 12

What does the '+' sign in Na+ indicate?

• Gain of an electron

• Loss of a proton

• Loss of an electron

• Gain of a proton