The Structure of the Atom

Question 1

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 2

Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?

Revolt · Accepted Answer

They both have the same atomic number.

Question 3

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

Revolt · Accepted Answer

protons and neutrons

Question 4

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 5

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

Revolt · Accepted Answer

the proton and the neutron

Question 6

A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?

Revolt · Accepted Answer

–3

Question 7

Which element has 16 protons in its nucleus?

Revolt · Accepted Answer

sulfur

Question 8

A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?

Revolt · Accepted Answer

0

Question 9

The table below gives the numbers of protons, electrons, and neutrons in four atoms.AtomNumber of protonsNumber of neutronsNumber of electrons198929983991049109Based on the table, which atom has a charge of –1?

Revolt · Accepted Answer

3

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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