Elements

Question 1

The element aluminum has an atomic number of 13. | How many protons are in the nucleus of an aluminum atom? | How many electrons does an aluminum atom have?

Revolt · Accepted Answer

13

Question 2

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

An element is made up of only one type of atom.; An element cannot be broken down into a simpler form.

Question 3

What is the mass number of the isotope lithium-7? | Lithium has 3 protons. How many neutrons are in the isotope lithium-8?

Revolt · Accepted Answer

7

Question 4

What ion is formed when an atom of mercury (Hg) loses two electrons?

Revolt · Accepted Answer

Hg+2

Question 5

The element aluminum has an atomic number of 13. | How many protons are in the nucleus of an aluminum atom? | How many electrons does an aluminum atom have?

Revolt · Accepted Answer

13

Question 6

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

A compound can be a pure substance.; A compound can be isolated.

Question 7

What is the mass number of the isotope lithium-7? | Lithium has 3 protons. How many neutrons are in the isotope lithium-8?

Revolt · Accepted Answer

5

Elements Answers

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