Atomic Structure and Ions

This video tutorial covers the basics of atomic structure, including how to find the number of neutrons, protons, and electrons in an atom. It explains the concept of isotopes using examples like chlorine and hydrogen, and discusses ions with examples of silver and magnesium. The video concludes with a nitride ion example, emphasizing the importance of understanding atomic and mass numbers, and how to adjust for ions.

What is the atomic number of chlorine?

• 17

• 16

• 18

• 19

How many neutrons are present in the isotope chlorine-37?

• 21

• 20

• 18

• 17

What is the mass number of hydrogen-2, also known as deuterium?

• 2

• 1

• 3

• 4

How many neutrons does deuterium have?

• 0

• 1

• 2

• 3

What is the atomic number of silver?

• 45

• 46

• 47

• 48

If silver has 60 neutrons, what is its mass number?

• 108

• 105

• 106

• 107

What happens to the electron count when magnesium forms an Mg2+ ion?

• Gains 1 electron

• Loses 2 electrons

• Loses 1 electron

• Gains 2 electrons

How many electrons does a neutral magnesium atom have?

• 13

• 12

• 11

• 10

What is the charge of a nitride ion?

• 1-

• 3-

• 4-

• 2-

If a nitride ion has 7 protons and 7 neutrons, what is its mass number?

• 14

• 13

• 15

• 12