Q

Question 1

What is It is the lightest solid element

Answer 1

Lithium

Question 2

What are the periodic properties?

Answer 2

What Are the Periodic Properties?

The periodic properties are:
ionization energy - energy required to remove an electron from an ion or gaseous atom

atomic radius - half the distance between the centers of two atoms that are touching each other

See Also: Why the Periodic Table Is Important

electronegativity - measure of the ability of an atom to form a chemical bond

electron affinity - ability of an atom to accept an electron

Question 3

What are the trends of periodicity?

Answer 3

The periodicity of these properties follows trends as you move across a row or period of the periodic table or down a column or group:

Moving Left → Right

Ionization Energy Increases
Electronegativity Increases
Atomic Radius Decreases
Moving Top → Bottom

Ionization Energy Decreases
Electronegativity Decreases
Atomic Radius Increases