20 first elements

What is the symbol of Sodium?

What is the symbol of Magnesium?

The symbol of silicon is

• Si

• Sc

• si

• Li

The 8th element of the periodic table is:

• Carbon

• Oxygen

• Silicon

• Neon

The symbol of calcium is:

K is the symbol of:

• Carbon

• Potassium

• Sodium

• Phosphorus

The atomic number of Helium is

• 10

• 1

• 2

• 4

Write the name of the element whose symbol is S

Write the name of the element whose symbol is B

Element # 12 is

• Sodium

• Magnesium

• Oxygen

• Hydrogen