Protons Neutrons Electrons

How many electrons are in Manganese (Mn) ?

• 12

• 25

• 55

• 30

The number of neutrons equals...

• atomic number - mass number

• Protons - neutrons

• Electrons - protons

• mass number - atomic number

The following element key shows how many protons?

• 16

• 15.999

• Oxygen

• 8

Tags

NGSS.MS-PS1-1

How many neutrons are in Tungsten

• 110

• 74

• 183

• 258

Tags

NGSS.MS-PS1-1

What is the atomic mass of Neon?

• 10

• 20.18

• 10.18

• 20

Tags

NGSS.HS-PS1-1

Which particles are found in the nucleus of an atom?

• protons only

• neutrons only

• protons & electrons

• protons & neutrons

How many protons are in Chlorine?

• 35

• 18

• 17

• 52

Tags

EX.8.P.1.1

How many electrons are in Potassium

• 19

• 39

• 20

• 58

How many neutrons are in magnesium?

• 12

• 24

• 25

• 36

Tags

NGSS.MS-PS1-1

How do you find the number of neutrons in an atom?

• It's the same as the atomic #

• It's the same as the mass number

• Subtract the atomic # from the mass number

• Add the mass number and the atomic #