20 First Elements in Periodic Table

Which is the formula for Magnesium

• M

• Ma

• Mg

• Mag

Spell name for element with symbol Cl

• Clorin

• Klorine

• Corrin

• Chlorine

What is the formula for Beryllium

(a)  

What is the proton number for Fluorine

• 3

• 9

• 17

• 19

Which is the correct formula for Silicon

• Sl

• Si

• S

• Sc

What is the proton number for Carbon

(a)  

Calcium have a chemical formula of Ca

• Yes

• No

Helium proton number is

• 6

• 3

• 2

• 10

Which spelling of element with a formula of S is correct

• Silicon

• Sillium

• Sulphur

• Sulfur

Formula for phosphorus is

(a)