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Atomic structure

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Question 7

The table below shows the numbers of subatomic particles in two atoms of the same element, Atom P and Atom Q.

Atom PAtom Q
Number of electrons1212
Number of neutrons1214
Number of protons1212
a.

Which particles are present in the nuclei of both atoms?

  • A electrons and neutrons
  • B electrons and protons
  • C neutrons and protons
  • D neutrons, protons, and electrons
[1]
b.

The atomic number of atom Q is __________.

[1]
c.

The mass number of atom Q is __________.

[1]
d.

Atoms P and Q are electrically neutral because

  • A the numbers of electrons and neutrons are equal
  • B the numbers of electrons and protons are equal
  • C the numbers of neutrons and protons are equal
  • D the numbers of electrons, neutrons, and protons are equal
[1]
e.

Use information from the table to explain why atoms P and Q are isotopes of the same element.

[2]
f.

The electronic configuration of atom P is

  • A 2, 8, 2
  • B 2, 2, 8
  • C 2, 8, 8
  • D 8, 4
[1]

Atomic structure Questions

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  3. /Atomic structure