Periodic table

What is the atomic number of carbon?

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

Which of the following elements is a noble gas?

What is the symbol for gold on the periodic table?

Which element is commonly used as a semiconductor in electronic devices?

How many elements are there in the periodic table?

Which element has the highest melting point?

Which element is responsible for the blue color in sapphires?

What is the lightest element on the periodic table?

Which element is essential for all known forms of life?