AS1 T2 Atomic Structure

What is the term used to describe the number of protons in an atom?

• Mass number

• Atomic number

• Isotopic number

• Relative atomic mass

Which term refers to the weighted average mass of the atoms in a naturally occurring sample of an element?

• Mass number

• Atomic number

• Relative atomic mass

• Isotopic mass

What is the term for the region within an atom that can hold up to two electrons with opposite spins?

• Shell

• Sub-shell

• Orbital

• Energy level

Which block does an element belong to if it is classified according to its position in the Periodic Table?

• s, p, d, or f block

• a, b, c, or d block

• x, y, z, or w block

• m, n, o, or p block

What is the term for the energy required to remove an electron from a gaseous atom or ion?

• Ionisation energy

• Electron affinity

• Electronegativity

• Atomic radius

What evidence can be used to predict the group of an element in the Periodic Table?

• Successive ionisation energies

• Atomic radii

• Electron affinities

• Electronegativity values

Which sub-atomic particle has a relative mass of 1/1840?

• Proton

• Neutron

• Electron

• Nucleus

What is the atomic number of an atom?

• The number of protons and neutrons in the nucleus

• The number of protons in the nucleus

• The number of electrons in the shells

• The number of neutrons in the nucleus

What is the mass number of an atom?

• The number of protons in the nucleus

• The number of electrons in the shells

• The total number of protons and neutrons in the nucleus

• The total number of electrons and neutrons in the nucleus

How many neutrons are there in a sodium atom with a mass number of 23 and an atomic number of 11?

• 11

• 12

• 23

• 34