1G2 Science Atomic number and elements level 1

What is the atomic number of hydrogen?

• 1

• 11

• 2

• 3

What is the proton number of hydrogen?

• 1

• 11

• 2

• 3

How many proton are there in one atom of hydrogen?

• 1

• 11

• 2

• 3

What is the atomic number of helium?

• 2

• 4

• 6

• 8

What is the proton number of helium?

• 2

• 4

• 6

• 8

How many proton are there in one atom of helium?

• 2

• 4

• 6

• 8

What is the atomic number of lithium?

• 3

• 4

• 7

• 10

What is the proton number of lithium?

• 3

• 4

• 7

• 10

How many protons are there in one lithium atom?

• 3

• 4

• 7

• 10

What is the atomic number of beryllium?

• 4

• 5

• 9

• 13