Electronic Structure Of Atoms

Question 1

Energy level

Answer 1

A region of definite energy within the atom that electrons can occupy

Question 2

Continuous spectrum

Answer 2

A continuous band of colours ranging from red to violet that is observed when white light is is analysed using a spectroscope

Question 3

Line/emission spectrum

Answer 3

A series of coloured lines of definitely wavelength against a dark background

Question 4

Absorption spectrum

Answer 4

Spectrum that is observed after white light has been passed though an element of a series of dark lines against a coloured background that are at the same wavelengths as the coloured lines in their emission spectrums

Question 5

Heisenberg uncertainty principle

Answer 5

It is not possible to determine at the same time the exact position and velocity of an electron

Question 6

Atomic orbital

Answer 6

The region in space where the probability of finding an electron is relatively high

Question 7

Energy sub level

Answer 7

A subdivision of an energy level containing one or more atomic orbitals all of which have the same energy

Question 8

Atomic radius

Answer 8

Half the distance between the nuclei of two atoms of the same element joined together by a single covalent bond

Question 9

First ionisation energy

Answer 9

Of an element is the minimum energy in kilojoules required to remove the most loosely bound electron from each isolated atom in a mole of the element in its ground state

Question 10

Second ionisation energy

Answer 10

Of an element is the minimum energy required to remove the most loosely bound electron from each singly charged positive ion in a mole of these ion