Electronic Arangement

Question 1

Energy level

Answer 1

is a fixed energy value that an electron in an atom may have

Question 2

Ground state

Answer 2

lowest energy state

Question 3

Excited State

Answer 3

higher energy state

Question 4

Sub-level

Answer 4

is a subdivision of a main energy level and consists of one or more orbitals of the same electron.

Question 5

An orbital

Answer 5

is a region in space where there is a high probability of finding an electron

Question 6

Heisenberg’s Uncertainty Principle

Answer 6

it is not possible to ascertain both the position and the momentum of an electron in an atom at the same time.

Question 7

The atomic radius of an atom

Answer 7

is defined as half the distance between the nuclei of two atoms of the same element that are joined together by a single covalent bond.

Question 8

The first ionisation energy

Answer 8

of an atom is the minimum energy required to completely remove the most loosely bound electron from one mole of neutral gaseous atom in the ground state.

Question 9

An energy level

Answer 9

is the energy of an electron in an orbital.