Isotopes, Mass number and atomic parts

The picture shows a piece of the Periodic Table for an imaginary element. How many electrons does this imaginary element have?

• 3

• 2

• 3.1415

• 1.1415

Tags

NGSS.HS-PS1-1

The picture shows a piece of the Periodic Table for an imaginary element. What is the atomic number of this imaginary element?

• 3

• 2

• 3.1415

• 5.1415

Tags

NGSS.HS-PS1-1

The picture shows a piece of the Periodic Table for an imaginary element. What is the atomic mass of this imaginary element?

• 3

• 2

• 3.1415

• 5.1415

The picture shows the symbol for an imaginary isotope. What is the atomic number of this imaginary element?

• 8

• 14

• 22

• 6

Tags

NGSS.HS-PS1-8

The picture shows the symbol for an imaginary isotope. What is the mass number of this imaginary ion?

• 8

• 14

• 22

• 6

Tags

NGSS.HS-PS1-7

The picture shows the symbol for an imaginary isotope. How many electrons are in this imaginary ion?

• 8

• 5

• 6

• 11

Tags

NGSS.HS-PS1-1

The picture shows the symbol for an imaginary isotope. How many neutrons are in this imaginary ion?

• 8

• 5

• 6

• 22

Tags

NGSS.HS-PS1-8

The picture shows the symbol for an imaginary isotope. How many protons are in this imaginary ion?

• 8

• 5

• 6

• 22

Tags

NGSS.HS-PS1-8

Which of the following describes the atomic mass of an element?

• it is equal to the total number of protons + neutrons

• it is equal to the weighted average of all the isotopes of an element

• It is equal to the mass number if you round it to a whole number

• It is equal to the number of protons + electrons

Which of the following describes the mass number of an element?

• it is equal to the total number of protons + neutrons

• it is equal to the weighted average of all the isotopes of an element

• It is equal to the atomic number if you round it to a whole number

• It is equal to the number of protons + electrons