Periodic Table And Energy

Question 1

Define periodicity

Answer 1

Repeating trend in properties of the elements across each period

Question 2

Define atomic radius

Answer 2

Half the internuclear distance in the structure of an element or for none metallic elements the covelant radius

Question 3

Define ionisation energy

Answer 3

A measure of how easily an atom loses electrons to Positive ions

Question 4

Define the first ionisation energy

Answer 4

Energy required to remove one electron from each atom in a mole of atoms in gaseous form