First 20 elements quiz

Which element has the atomic number 5?

• Hydrogen

• Lithium

• Boron

• Phosphorus

The electronic configuration of Sulphur is

What is the valency of Carbon?

• 3+

• 0

• 4-

• 4

Draw the element Helium's symbol.

Neon is a/an

• inert gas

• metal

• non-metal

• metalloid

The electronic configuration of hydrogen is

Which of the following options is highly reactive?

• Neon

• Lithium

• Helium

• argon

The valency of calcium is

______ is a gas essential to live

• Nitrogen

• Sulphur

• Neon

• Oxygen

The periodic table arranges