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6.1 Atomic structure and isotopes

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Question 11

Potassium-39 and potassium-41 are naturally occurring stable isotopes of potassium.

Nuclei of potassium-39 and potassium-41 can be represented by these symbols:

{}^{39}\text{K}_{19} \quad \text{and} \quad {}^{41}\text{K}_{19}

Complete the table for a neutral atom of potassium-39 and a neutral atom of potassium-41.

	Number of neutrons in the nucleus	Number of electrons in orbit around the nucleus
potassium-39
potassium-41

[2]

Markscheme

6.1 Atomic structure and isotopes Questions

GCSE
Physics
6.1 Atomic structure and isotopes

81 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.

6.1 Atomic structure and isotopes

Question bank

6.1 Atomic structure and isotopes

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

Question 11

Potassium-39 and potassium-41 are naturally occurring stable isotopes of potassium.

Nuclei of potassium-39 and potassium-41 can be represented by these symbols:

{}^{39}\text{K}_{19} \quad \text{and} \quad {}^{41}\text{K}_{19}

Complete the table for a neutral atom of potassium-39 and a neutral atom of potassium-41.

	Number of neutrons in the nucleus	Number of electrons in orbit around the nucleus
potassium-39
potassium-41

[2]

Markscheme

6.1 Atomic structure and isotopes Questions

GCSE
Physics
6.1 Atomic structure and isotopes

81 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.