A nuclide has the notation X . Which line in the table describes a different isotope of this nuclide?

5054_s07_qp_1

MCQ

2007

Paper 1, Variant 0

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A nucleus of the element cobalt may be represented by the symbol Co . What is the structure of this nucleus?

5054_s08_qp_1

MCQ

2008

Paper 1, Variant 0

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What are the numbers of neutrons, protons and electrons in a neutral atom of U ?

5054_s09_qp_1

MCQ

2009

Paper 1, Variant 0

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The symbol 92 U represents a nucleus of uranium with nucleon number (mass number) 238 and proton number (atomic number) 92. State the meaning of nucleon number. A nucleus of uranium-238 decays to form a nucleus of thorium by the emission of an alpha-particle. State the proton number of an alpha-particle, the nucleon number of an alpha-particle, the proton number of thorium, the nucleon number of the thorium isotope formed.

5054_s09_qp_2

THEORY

2009

Paper 2, Variant 0

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Proton number is another name for atomic number. Nucleon number is another name for mass number. What are isotopes?

5054_s10_qp_11

MCQ

2010

Paper 1, Variant 1

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Proton number is another name for atomic number. Nucleon number is another name for mass number. What are isotopes?

5054_s10_qp_12

MCQ

2010

Paper 1, Variant 2

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Chlorine exists as two isotopes. One has a nucleon number (mass number) of 35 and the other has a nucleon number (mass number) of 37. Which table shows the correct numbers of protons and neutrons in the isotopes?

5054_s11_qp_11

MCQ

2011

Paper 1, Variant 1

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Chlorine exists as two isotopes. One has a nucleon number (mass number) of 35 and the other has a nucleon number (mass number) of 37. Which table shows the correct numbers of protons and neutrons in the isotopes?

5054_s11_qp_12

MCQ

2011

Paper 1, Variant 2

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The radioactive isotope radium-226 may be shown...

5054_s12_qp_11

MCQ

2012

Paper 1, Variant 1

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The nucleus of a helium atom is represented as He . What does a neutral atom of helium contain?

5054_s12_qp_12

MCQ

2012

Paper 1, Variant 2

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