How many element groups are there?

Who is the creator of the periodic table?

What element does the symbol Au stand for?

What element does the symbol Fe stand for?

Which element has the highest melting point?

Which of the following forms the basis of the modern periodic table?

How many naturally occurring elements are there?

Which element is the most abundant in the universe?

The horizontal rows in Mendeleev’s periodic table were called as ______

Which of the following period is the shortest one?