An element A has 2 electrons in its fourth shell. State:
is it anoxidisingor reducing agent
is it anoxidisingor reducing agent
106 questions across 5 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.
[1 Mark Question Answer]
75 Q→02[2 Mark Question Answer]
16 Q→03[3 Mark Question Answer]
6 Q→04[5 Mark Question Answer]
4 Q→05Fill in the blanks.
5 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
| Atomic number | Element | Electronic configuration | Select an element of the same group |
| 11 | Sodium | | (Ca/N/K)… |
| 15 | Phosphorus | | (Ba/N/Rb)… |
| 16 | Sulphur | | (F/Cl/O)… |
| 9 | Fluorine | | (Ca/Cl/K)… |
| Column A | Column B |
| (a) Element short by 1 electron in octet | (i) Transition elements |
| (b) Highly reactive metals | (ii) Noble gases |
| (c) Non-reactive elements | (iii) Alkali metals |
| (d) Elements of groups 3 to 12 | (iv) Alkaline earth metals |
| (e) Radioactive elements | (v) Halogens |
| (f) Elements with 2 electrons in the outermost orbit | (vi)Actinides |
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