Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table

Atomic structure and the Periodic Table — practice question

The electronic arrangements of five atoms, A, B, C, D and E, are displayed. Answer the questions below about these atoms. Any atom may be used once, used more than once, or not used at all.
(a(i))[1]

Which atom, A, B, C, D or E, has a full outer shell of electrons?

(a(ii))[1]

Which of atoms A, B, C, D or E has a proton number of 15?

(a(iii))[1]

Which atom, A, B, C, D or E, has 4 electron shells?

(a(iv))[1]

Which of atoms A, B, C, D or E is fluorine?

(a(v))[1]

Which atom, A, B, C, D or E, belongs to a metallic element?

(b)[3]

Complete the table to display the numbers of electrons, neutrons and protons in the chlorine atom and bromide ion shown.

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