Atomic Structure and Average Atomic Mass

All of the following are found in the nucleus EXCEPT

• Proton

• Neutron

• Electron

• There are no exceptions. All are found in the nucleus

All of the following are descriptions of a proton EXCEPT

• It has a positive charge

• It is found in the nucleus

• It is responsible for the identity of an atom

• It is responsible for the reactivity of an atom

A neutral atom of chlorine-35 can be described as the following EXCEPT

• contains 17 protons

• contains 35 electrons

• contains 18 neutrons

• has a mass of 35 amu

Tags

NGSS.MS-PS1-1

An element with 11 protons, 11 electrons, and 12 neutrons is identified as

• sodium - 11

• magnesium - 12

• sodium - 23

• magnesium - 34

Tags

NGSS.MS-PS1-1

What is the atomic mass of Sodium?

• 11

• 22.990

• 33.990

• 11.990

What is the atomic mass of Helium

• 4.0026

• 2.0026

• 4

• 1

What is the atomic mass of Neon?

• 10

• 20

• 30

What is the atomic mass of Gold?

• 79

• 196.97

• 79.97

• 275

What is the atomic number of gold?

• 79

• 196.97

• 79.97

• 275

Tags

NGSS.MS-PS1-1

What is the atomic mass of "F"

• 9

• 18

• 17

• 19