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Lesson: Isotopes

Worksheet • 14 Questions

Q1:

Which of the following nuclides has the lowest number of neutrons?

  • A 1 2 N
  • B 2 1 F
  • C 1 1 B
  • D 1 2 C
  • E 1 1 B e

Q2:

In nuclide notation, which position is occupied by the atomic number?

  • A X
  • B X
  • C X
  • D X

Q3:

What is the nuclide symbol for the isotope of oxygen with the same number of neutrons and protons?

  • A 1 6 8 O
  • B O 8 1 6
  • C 8 1 6 O
  • D O 1 6 8
  • E 8 8 O

Q4:

The isotope hydrogen-1 has the nuclide symbol 1 1 H .

How many protons are there in atoms of hydrogen-1?

How many neutrons are there in atoms of hydrogen-1?

What is the mass number of hydrogen-1?

Q5:

What is the nuclide symbol for the isotope of carbon with two more neutrons per nucleus than carbon-12?

  • A 1 4 6 C
  • B 1 2 8 C
  • C 6 1 4 C
  • D 1 2 6 C
  • E 6 1 2 C

Q6:

In nuclide notation, which position is occupied by the mass number?

  • A X
  • B X
  • C X
  • D X

Q7:

What is the nuclide symbol for carbon-12?

  • A 1 2 6 C
  • B C 1 2 6
  • C 6 1 2 C
  • D C 6 1 2
  • E 6 6 C

Q8:

The isotope iridium-193 has the nuclide symbol 1 9 3 7 7 I r .

How many protons are there in atoms of iridium-193?

How many neutrons are there in atoms of iridium-193?

What is the mass number of iridium-193?

Q9:

The isotope oxygen-18 has the nuclide symbol 1 8 8 O .

How many protons are there in atoms of oxygen-18?

How many neutrons are there in atoms of oxygen-18?

What is the mass number of oxygen-18?

Q10:

Nuclide notation is used to summarize some of the properties of an atom or an ion. Which of the following properties is not directly expressed in nuclide notation?

  • ANeutron number
  • BCharge
  • CMass number
  • DElement symbol
  • EAtomic number

Q11:

What is the nuclide symbol for tritium, a hydrogen isotope with two neutrons?

  • A 3 1 H
  • B H 3 1
  • C 3 1 T
  • D 1 3 T
  • E 1 3 H

Q12:

Which of the following nuclides has the greatest number of neutrons?

  • A 3 9 C l
  • B 3 9 K
  • C 3 0 S i
  • D 4 0 C a
  • E 3 2 S

Q13:

Rusting can be detected by immersing an iron object in an aqueous solution of ferroxyl indicator.

What color is a fresh aqueous ferroxyl indicator?

  • AYellow
  • BBlue
  • CGreen
  • DRed
  • EColorless

What color is observed in an aqueous ferroxyl indicator solution if F e 2 + ions are present?

  • ABlue
  • BYellow
  • CRed
  • DGreen
  • EPurple

Which species is present if a pink color is observed in an aqueous ferroxyl indicator solution?

  • A O H
  • B H 2
  • C H O 3 +
  • D F e 3 +
  • E O 2

Q14:

What is the nuclide symbol for oxygen-16?

  • A 1 6 8 O
  • B O 8 1 6
  • C 8 1 6 O
  • D O 1 6 8
  • E 8 8 O
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