Atomic Mass Number

What is Atomic Mass Number ?

• Number of Protons

• Number of Neutrons

• Number of Protons and Neutrons

• Number of Protons and Electrons

What is the Atomic Mass Number of the element mentioned above

• 12

• 6

• C

• 16

Tags

NGSS.MS-PS1-1

Atomic Mass Number is denoted by the symbol

• p

• n

• A

• e

How many Neutrons are present in the Sodium atom ?

• 12

• 11

• 0

• 23

Tags

NGSS.MS-PS1-1

What is the atomic mass of calcium-40?

• 20

• 60

• 40

• 41

Tags

NGSS.MS-PS1-1

What is the atomic mass of Neon?

• 10

• 20

• 30

What is the atomic mass of Sodium?

• 11

• 22.990

• 33.990

• 11.990

What is the primary difference between the atomic mass and the atomic number of an element?

• The atomic mass is the sum of protons and neutrons, while the atomic number is the number of protons.

• The atomic mass is the number of protons, while the atomic number is the sum of protons and neutrons.

• The atomic mass is the number of electrons, while the atomic number is the number of protons.

• There is no significant difference; both terms can be used interchangeably.

What is the mass number of neon?

• 10

• 20

• 30

Answer explanation

The mass number of an element is the total number of protons and neutrons in its nucleus. Neon has 10 protons and typically 10 neutrons, giving it a mass number of 20, making '20' the correct choice.

What is the atomic mass of "F"

• 9

• 18

• 17

• 19