2.1.1-2.1.2-atomic-structure

What is the relative charge of a proton?

• +1

• 0

• -1

• +2

How is the number of neutrons in an atom calculated?

• A + Z

• A - Z

• Z - A

• A x Z

What is the relative mass of an electron?

• 1

• 0

• 1/1800

• 1800

What is the atomic number of Lithium (Li) as shown in the diagram?

• 3

• 4

• 7

• 10

What is the relative charge of a neutron?

• +1

• 0

• -1

• +2

What is the definition of relative molecular mass?

• The mass of one isotope compared to one twelfth of the mass of one atom of carbon-12

• The average mass of a molecule compared to one twelfth of the mass of one atom of carbon-12

• The weighted mean mass of one atom compared to one twelfth of the mass of one atom of carbon-12

• The mass of one atom compared to one twelfth of the mass of one atom of carbon-12

What is the relative isotopic mass of Mg²⁴?

• 24.00

• 25.00

• 26.00

• 27.00

What is the percentage abundance of Mg²⁶?

• 78.7

• 10.13

• 11.17

• 24.00

What is the position of an electron in an atom?

• Nucleus

• Orbitals

• Protons

• Neutrons

What is the relative mass of a proton?

• 1

• 0

• 1/1800

• 1800