Periodic Table 1

What's the atomic number of Sodium?

• 14

• 11

• 17

• 10

What's the atomic number of " Be "?

• 2

• 3

• 4

• 5

What's the atomic number of "Si" ?

• 14

• 12

• 13

• 15

What's the atom that have the atomic number 10 ?

• Mg

• Al

• Ne

• Cl

What's the symbol of "Silicon"

• Sn

• Se

• S

• Si

What's the atomic number of Oxgen?

• 6

• 7

• 8

• 9

What's the atom that have the atomic number 9 ?

• Sn

• Na

• Mg

• F

What's the number of metals in the third period?

• 3

• 2

• 5

• 4

How many noble gases are there in the first three periods?

• 1

• 3

• 2

• 4

What's the atomic number of phosphorous ?

• 14

• 13

• 15

• 16