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Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore,
A small quantity of solid ammonium chloride (NH4Cl) was heated gently in a test tube, the solid gradually disappears to produce two gases. Later, a white cloudy deposit was observed on the cooler part of the test tube. The ammonium chloride is said to have undergone?
In the reaction between sodium hydroxide and sulphuric acid solutions, what volume of 0.5M sodium hydroxide would exactly neutralise 10cm\(^3\) of 1.25M sulphuric acid?
The periodic classification of elements is an arrangement of the elements in order of their
When sodium chloride and metallic sodium are each dissolved in water
Zinc Oxide is a?