Quiz on science

What is valency?

• The combining capacity of an element

• The number of electrons in the innermost shell

• The number of electrons in the outermost shell

• The number of protons in the nucleus

What is the valency of carbon?

• Three

• four

• six

• both

What is the valency of an element with six valence electrons?

• two

• four

• six

• none

Why does carbon form multiple compounds?

• Tetravalency

• Catenation

• Shares multiple electrons to form a double or triple bond

• All of the above

How many double bonds can a carbon atom form?

• one

• two

• five

• none