Periodic table

How many elements are there in the periodic table?

• 118

• 110

• 110999

• 130

Write the full form of (Rg) in the periodic table

(a)   is the 9th element in the periodic table

What is the chemical symbol for gold?

• Au

• Ag

• Al

• Fe

What is the atomic number of carbon?

• 6

• 8

• 12

• 14

Which element is a noble gas?

• Helium

• Lithium

• Neon

• Argon

What is the chemical symbol for iron?

• Fe

• Ir

• Io

• Fr

What is the chemical symbol for sodium?

• Na

• Sa

• No

• Ni

How many protons are there in the nucleus of a carbon atom?

• 6

• 8

• 12

• 14

Which element is the most abundant in the Earth's crust?

• Oxygen

• Silicon

• Aluminum

• Iron