B1: Atoms CFA Review

How many electrons does an atom of Bromine contain?

• 35

• 80

• 18

• 40

Who discovered the nucleus?

• Rutherford

• Dalton

• Chadwick

• Thomson

What is an atom called that has a charge of zero?

• cation

• anion

• atom

• isotope

The electron configuration for calcium is

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

• 1s² 2s² 2p¹⁰ 3s² 3p⁶ 3s²

• 1s² 2s² 2p⁶ 3p⁶ 4s²

• 1s² 2s² 3s² 3p⁶ 4s²

Tags

NGSS.HS-PS1-1

Using your periodic table, which element has 33 protons?

• Sodium

• Potassium

• Sulfur

• Arsenic

How many neutrons does an atom of Fluorine with a mass number of 19 contain?

• 9

• 38

• 10

• 18

What is the element symbol for an element with 15 protons?

• Mg

• P

• Al

• S

What ion has 16 protons and 18 electrons?

• Aluminum

• Oxygen

• Sulfur

• Neon

Tags

NGSS.MS-PS1-1

What is the charge of a neutron?

• +1

• 0

• -1

• It depends on the atom

What is the term for the number of protons plus neutrons in an atom?

• Atomic number

• Atomic mass

• Isotope number

• Valency