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Atomic structure

Atomic structure

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Question 7

An ionized atom of the magnesium isotope 1225Mg2+^{25}_{12}\text{Mg}^{2+}1225​Mg2+ is detected in a mass spectrometer.

What is the specific charge of this magnesium ion?

Use the following values:

  • mass of a nucleon = 1.67 × 10-27 kg
  • elementary charge e=1.60×10−19 Ce = 1.60 \times 10^{-19}\text{ C}e=1.60×10−19 C
A

7.7×106 C kg−17.7 \times 10^6\text{ C kg}^{-1}7.7×106 C kg−1

B

1.6×107 C kg−11.6 \times 10^7\text{ C kg}^{-1}1.6×107 C kg−1

C

3.8×107 C kg−13.8 \times 10^7\text{ C kg}^{-1}3.8×107 C kg−1

D

4.6×107 C kg−14.6 \times 10^7\text{ C kg}^{-1}4.6×107 C kg−1

Markscheme

Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /Atomic structure

77 exam-style questions on OCR GCSE Chemistry Atomic structure. Each one has a worked solution and a mark scheme showing where the marks go.

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