Structure of atom

What is the symbol of sodium?

• S

• NA

• Na

• So

What is the atomic number of chlorine?

• 35

• 18

• 7

• 17

Tags

NGSS.MS-PS1-1

How many protons are there in an atom of aluminium?

• 27

• 13

• 14

• 17

Tags

NGSS.MS-PS1-1

What is the number of nucleons in an atom of boron?

• 5

• 6

• 16

• 11

How many neutrons are found in atom of sulphur?

• 16

• 32

• 6

• 8

What is the symbol of manganese?

• Mg

• M

• Ma

• Mn

How many electrons are there in an atom of potassium with mass number 39 and atomic number 19?

• 19

• 20

• 39

• 9

What is the atomicity of oxygen?

• 16

• 2

• 8

• 6

What is the electronic configuration of nitrogen?

• (2, 5)

• (2, 2, 3)

• (3, 4)

• (2, 2, 2, 1)

An atom of phosphorous has 15 electrons. What is the valency of phosphorous?

• 5

• 3

• 2

• 1