Ions and Isotopes Mastery Quiz

What is the charge of an ion with 11 protons and 10 electrons?

• +1

• -1

• 0

• +2

Which of the following best describes an isotope?

• Atoms with the same number of protons but different numbers of electrons

• Atoms with the same number of protons but different numbers of neutrons

• Atoms with different numbers of protons but the same number of neutrons

• Atoms with the same number of electrons but different numbers of protons

What is the atomic number of an element with 17 protons?

• 17

• 35

• 18

• 16

How does an atom become a positive ion?

• By gaining electrons

• By losing electrons

• By gaining protons

• By losing protons

What is the mass number of an isotope with 20 neutrons and 18 protons?

• 38

• 20

• 18

• 2

Which of the following isotopes is used in medical imaging?

• Carbon-12

• Uranium-235

• Technetium-99m

• Hydrogen-1

What is the charge of an ion with 16 protons and 18 electrons?

• +2

• -2

• 0

• +1

What does the atomic number represent?

• The number of neutrons

• The number of electrons

• The number of protons

• The mass number

How many neutrons does Carbon-14 have?

• 6

• 8

• 14

• 20

Which of the following is true about isotopes of the same element?

• They have different atomic numbers.

• They have different chemical properties.

• They have the same number of protons.

• They have the same number of electrons in their neutral state.