PS: Ions and Isotopes

What is an ion?

• An atom with the same number of protons and electrons

• An atom with a different number of protons and neutrons

• An atom or molecule with a net electric charge due to the loss or gain of one or more electrons

• An atom with a different number of protons but the same number of neutrons

How many protons and electrons are in the ion Na⁺?
(Atomic Number = 11)

• 11 protons and 11 electrons

• 11 protons and 10 electrons

• 10 protons and 11 electrons

• 11 protons and 12 electrons

What defines an isotope?

• Atoms of the same element with different numbers of electrons

• Atoms of the same element with different numbers of protons

• Atoms of the same element with different numbers of neutrons

• Atoms of different elements with the same number of neutrons

How many neutrons are in the isotope ¹⁴C? (Atomic Number = 6)

• 6

• 8

• 14

• 20

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

• -1

• 0

• +1

• +2

Which of the following is an isotope of ¹²C ?

• ¹²B

• ¹³C

• ¹²N

• ¹⁸F

If an ion has 17 protons and 18 electrons, what is its charge?

• +1

• 0

• -1

• -2

What happens to an atom when it becomes a cation?

• It gains protons

• It loses protons

• It gains electrons

• It loses electrons

Which of the following is true about isotopes?

• They have different atomic numbers

• They have different chemical properties

• They have the same number of protons

• They are ions of each other

What do you call a subatomic particle with a negative charge?

• proton

• neutron

• electron

• anion