The Structure of the Atom

Question 1

A particle that travels around the nucleus of an atom in orbitals is called a(n)

Revolt · Accepted Answer

electron.

Question 2

Which two particles are found in the nucleus of an atom?

Revolt · Accepted Answer

protons and neutrons

Question 3

What is the charge on an electron?

Revolt · Accepted Answer

–1

Question 4

The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?

Revolt · Accepted Answer

30

Question 5

An atom of element Be has four protons, four electrons, and five neutrons. Which element below could be an isotope of this atom?

Revolt · Accepted Answer

beryllium-10

Question 6

The table below gives the atomic mass and relative abundance values for the three isotopes of element M.Relative abundance (%)Atomic mass (amu)78.9923.985010.0024.985811.0125.9826What is the average atomic mass (in amu) of element M?

Revolt · Accepted Answer

24.30

Question 7

Which statement describes an electron?

Revolt · Accepted Answer

It has a negative charge and is located in orbitals around the nucleus.

Question 8

A scientist uses an accelerator and high energy electrons to study the particles inside the protons of a helium atom. What particles is the scientist studying?

Revolt · Accepted Answer

the He quarks

Question 9

Which element has 16 protons in its nucleus?

Revolt · Accepted Answer

sulfur

Question 10

In which of these statements are protons, electrons, and neutrons correctly compared?

Revolt · Accepted Answer

Quarks are present in protons and neutrons but not in electrons.

The Structure of the Atom Answers

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