The newest 20 of 20 written questions. Open one to see it on the real paper.
State the number of electrons in the outer shell of a calcium atom. number electrons
See it on the paper →Determine the electronic configuration of this oxygen atom. electronic Configuration
See it on the paper →Amagnesium atom has an atomic number of 12 and a mass number of 24. Complete Figure 6.2 to show the electronic configuration of a magnesium atom. Figure 6.2
See it on the paper →When sodium reacts with chlorine, sodium ions are formed from sodium atoms and chloride ions are formed from chlorine atoms. The electronic configuration of a sodium atom is 2,8,1. State the electronic configuration of a sodium ion.
See it on the paper →Fig. 6.2 shows an outline of the Periodic Table. The letter E shows the position of an element in the Periodic Table. The letter E is not the chemical symbol of the element. E Fig. 6.2 Predict the electronic configuration of element E. Tick (3) one box. 2.2 2.8.2 2.3 2.8.3
See it on the paper →Determine the electronic configuration of a magnesium atom. (c) Magnesium is in Group II and period 3 of the Periodic Table.
See it on the paper →Which electronic structure belongs to a non-metallic element?
See it on the paper →Which row is correct?
See it on the paper →Deduce the electronic structure for a sodium ion.
See it on the paper →Deduce the electronic structure for a chloride ion.
See it on the paper →An atom of sodium has 11 electrons. A sodium ion has the symbol Na + . Complete Fig. 2.1 to show the electronic structures of a sodium atom and a sodium ion. The first electron shell has been completed for you. sodium atom sodium ion Fig. 2.1
See it on the paper →During the reaction sodium atoms form sodium ions, Na + , and chlorine atoms form chloride ions, Cl – . Fig. 11.2 shows the electronic structure of a sodium ion and a chloride ion. sodium ion chloride ion – + Cl Na Fig. 11.2 Write down the electronic structure of a sodium atom and a chlorine atom. sodium atom chlorine...
See it on the paper →State the electronic structure of a lithium atom.
See it on the paper →State which diagram A, B or C, shows the electronic structure of a Group I metal.
See it on the paper →Fig. 5.2 shows the electronic structure of a magnesium atom. The proton number (atomic number) of magnesium is 12. Fig. 5.2 Draw a diagram to show the electronic structure of an oxygen atom. The proton number (atomic number) of oxygen is 8.
See it on the paper →When magnesium reacts with oxygen, magnesium ions and oxide ions are made. Fig. 5.3 shows the electronic structure of an oxide ion. 2– Fig. 5.3 Draw a diagram to show the electronic structure of a magnesium ion.
See it on the paper →Potassium has a proton number of 19. Complete Fig. 5.2 to show the electronic structure of a potassium atom. The inner shell electrons have been drawn for you. Fig. 5.2
See it on the paper →State the electronic structure for this sodium atom.
See it on the paper →State the electronic structure of this atom of magnesium.
See it on the paper →An atom of phosphorus contains 15 electrons. Complete Fig. 2.2 to show the number of electrons in each shell of a phosphorus atom. One electron in each shell has been drawn for you. electron x x x Fig. 2.2
See it on the paper →Comprehensive responses • A few candidates were able to determine how the electronic configuration of a sodium atom changed when sodium lost an electron. Limited responses • Some candidates attempted to work out the electronic configuration when a sodium atom gained an electron.
— Examiner report, February/March 2026, 0654/32 Q7(c) (Cambridge)
The majority of candidates selected the correct electron configuration of element E.
— Examiner report, May/June 2025, 0654/41 Q6(b) (Cambridge)
The electronic configuration was well deduced by many. 2 and 12 were seen often.
— Examiner report, May/June 2025, 0654/43 Q6(c) (Cambridge)
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