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Edexcel IGCSE Chemistry 1.19 Electronic Configurations

Practise deducing shell configurations for the first 20 elements and identifying species from outer-shell electrons.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • use atomic number to distribute electrons across shells for the first 20 elements
  • link group number to the number of outer-shell electrons
  • identify a full outer shell or element symbol from a displayed configuration

1.19 Electronic configurations question 1

[Maximum number: 1]

Table 2 shows the numbers of protons, neutrons and electrons in the species U, V, W, X, Y and Z.

Table 2

Table 2

Use the information in Table 2 to answer these questions.
Each species may be used once, more than once or not at all.

Give the letter of the species that has six electrons in its outer shell.

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