Periodic table of elements

What is the element whose symbol is H?

• Hydrogen

• Holmium

• Helium

• Hafmium

What is the symbol of iron?

• Ir

• I

• Fe

• Ro

What is the symbol of Cobalt?

• Co

• C

• Cu

• Cb

What is the element whose symbol is Ca?

• Carbon

• Curium

• Cadmium

• Calcium

Which one is a noble gas?

• Ba

• H

• Xe

• Er

What period is Lithium in?

• 1

• 2

• 3

• 4

Which is the group of the alkaline earth metals?

• I

• IV

• XII

• II

The elements of the XVIII group are...

• Alkali metals

• Noble Gases

• Halogens

• Pnictogens

The triads are the groups..

• I, II, III

• XI, XII, XIII

• XV, XVI, XVII

• VIII, IX, X

Lanthanides and Actinides are known as...

• Constituent elements

• New elements

• Rare earth elements

• Elements for new technologies