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 identity of the atom?

• Aluminum

• Silicon

• Cobalt

• Zirconium

Tags

NGSS.MS-PS1-1

Which is the best nuclear symbol for a potassium atom with 21 neutrons?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Which of the following is the nuclear symbol for lithium-6

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

The correct hyphen notation for the nuclear symbol given is

• chromium - 24

• chromium - 50

• chromium - 74

• chromium - 26

Tags

NGSS.MS-PS1-1

The hyphen notation of an atom of calcium with 20 protons, 20 electrons, and 22 neutrons is

• calcium - 20

• calcium - 40

• calcium - 62

• calcium - 42

Tags

NGSS.MS-PS1-1

The number 84 in strontium - 84 represents

• the atomic number

• the mass number

• the average atomic mass

• the number of electrons