Question

Choose the odd one out and give a reason for your choice:
a. Sodium, beryllium, sulphur, aluminium
b. Hydroxide ion, sulphate ion, nitrate ion, chloride ion
c. Electrons, nucleus, protons, neutrons.
d. Reactants, arrow, products, bubbles
e. Temperature, light, change in colour, pressure

Answer 1

Answer:

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