Worksheet: Nuclide Notation

In this worksheet, we will practice writing and interpreting symbols denoting the element, charge, mass number, and atomic number of atoms and ions.

Q1:

Which isotope is represented by nuclide symbol 2411Na?

  • ASodium-13
  • BSodium-11
  • CSodium-24
  • DSodium-35
  • ESodium-37

Q2:

Which element X has an isotope with nuclide symbol 7935X?

  • A R h
  • B S b
  • C A u
  • D R u
  • E B r

Q3:

Which element X has an isotope with nuclide symbol 5725X?

  • A P b
  • B G e
  • C M g
  • D L a
  • E M n

Q4:

Which element X has an isotope with nuclide symbol 12156X?

  • A F e
  • B T b
  • C Z n
  • D S b
  • E B a

Q5:

What is the nuclide symbol for radon-224?

  • A 8 8 1 3 6 R a
  • B 2 2 4 8 6 R n
  • C 2 2 4 8 8 R a
  • D 8 8 2 2 4 R a
  • E 1 3 8 8 6 R n

Q6:

Which element X has an isotope with nuclide symbol 3414X?

  • A C a
  • B S i
  • C C d
  • D N
  • E S e

Q7:

What is the nuclide symbol for an 𝛼 particle, including the charge?

  • A 3 2 + H e
  • B 4 2 2 + H e
  • C 4 2 H e
  • D 2 2 H e
  • E 3 2 2 + H e

Q8:

What is the nuclide symbol for the atom or ion with 25 protons, 20 neutrons, and 24 electrons?

  • A 4 9 2 5 + M n
  • B 2 0 2 5 M n
  • C 4 9 2 0 – M n
  • D 4 5 2 5 + M n
  • E 4 5 2 0 M n

Q9:

What is the nuclide symbol for the atom or ion with 45 protons, 24 neutrons, and 43 electrons?

  • A 6 9 2 4 C r
  • B 6 9 4 5 2 + R h
  • C 4 3 6 9 2 + T m
  • D 6 7 4 3 2 – T c
  • E 4 5 6 7 2 – H o

Q10:

What is the nuclide symbol for the atom with 53 protons, 89 neutrons, and 54 electrons?

  • A 1 4 2 5 3 – I
  • B 8 9 5 4 + T e
  • C 1 4 2 5 4 T e
  • D 8 9 5 3 – I
  • E 1 4 3 5 4 – T e

Q11:

What is the nuclide symbol for the atom with 97 protons, 146 neutrons, and 97 electrons?

  • A 1 9 4 9 7 B k
  • B 1 4 6 9 7 B k
  • C 9 7 1 4 6 B k
  • D 9 7 9 7 B k
  • E 2 4 3 9 7 B k

Q12:

Which of the following is a true description of 23492U?

  • AThe atom contains 234 neutrons.
  • BThe atom has the same nuclear binding energy as 23892U.
  • CThe atom is an isotope of 23494Pu.
  • DThe atom has the same electron configuration as 23892U.
  • EThe atom has an atomic mass number of 92.

Q13:

Which noble gas has an isotope whose neutral atom contains 75 neutrons and 54 electrons?

  • ABromine
  • BRadon
  • CKrypton
  • DIodine
  • EXenon

Q14:

Which alkali metal has 11 protons and a mass number of 23?

  • AMagnesium
  • BCalcium
  • CSodium
  • DLithium
  • EPotassium

Q15:

What is the symbol for the ion with atomic number 55, mass number 133 and a 1+ charge?

  • A 1 3 3 5 4 X e
  • B 1 3 3 5 5 + C s
  • C 7 8 5 5 + C s
  • D 7 8 5 4 + X e
  • E 1 3 3 5 6 B a

Q16:

Which isotope is represented by the nuclide symbol 19477Ir?

  • AIridium-194
  • BIridium-77
  • CIron-117
  • DIron-77
  • EIron-194

Q17:

Which alkaline earth metal’s cation contains 138 neutrons and 86 electrons?

  • AThorium
  • BBarium
  • CRadon
  • DFrancium
  • ERadium

Q18:

What is the symbol for the ion with mass number 31, 18 electrons, and a 3βˆ’ charge?

  • A 1 3 1 5 3 – P
  • B 3 1 1 8 3 – A r
  • C 3 1 1 5 3 – P
  • D 3 1 2 1 S c
  • E 1 3 1 8 A r

Q19:

An ion has the symbol 342–S.

How many protons does the ion contain?

How many neutrons does the ion contain?

How many electrons does the ion contain?

Q20:

What is the symbol for the ion containing 54 electrons, 53 protons, and 74 neutrons?

  • A 1 2 7 5 3 – I
  • B 7 4 5 4 + X e
  • C 7 4 5 3 – I
  • D 5 3 7 4 – I
  • E 1 2 8 5 4 + X e

Q21:

What is the symbol for the ion with a 3+ charge, containing 24 electrons and 30 neutrons?

  • A 5 1 2 1 S c
  • B 5 7 2 7 3 + C o
  • C 5 4 2 4 3 + C r
  • D 2 4 5 4 3 + C r
  • E 5 4 2 7 3 + C o

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