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Ionization energy: The amount of energy required to remove an electron from an isolated atom or molecule. Trends down group : Ionization energy decreases down the group. This is due to the shielding or screen effect of the outer electrons from the nucleus. The attraction is weaker and they are more easily removed. Helium and radon both belong to group 8 which are called noble gases. Helium (He) has the highest ionization energy and Radon (Rn) has the lowest ionization energy.

Vander Waals are the weakest attractive forces that exist between two molecules. Option A,B,C are not weak forces because the force attraction that exist between their interested molecule are very strong

Sulphur is an element that burns with a strongly explosive smell, as a result it is explosive smell

Rays travels in straight lines and finds its way through any opening available. It could be refracted, reflected or transmitted based on any obstacle. Option A,B,C are not the reason why the cathode are coasted shadows

No expanded working has been attached for this question yet. The verified answer is Option C.

A is the correct answer. Tartaric acid is found in cream of tartar, which is used in cooking candies and frostings for cakes. Tartaric acid is also found in baking powder, where it serves as the source of acid that reacts with sodium bicarbonate (baking soda)

V = 1/P cross multiply K = VP V1P1 = V2V2 For a fixed amount of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship, when temperature is held constant. The equations supports only Boyle’s law. Option A,C,D are not in support of the equation...

\(\frac{V_{1}}{T_{1}}\) = \(\frac{V_{2}}{T_{2}}\) \(T_{1}\) = 3 + 273 = 276K \(T_{2}\) = 18 + 273 = 291K \(V_{1}\) = \(92cm^{3}\) \(V_{2}\) = ? \(V_{2}\) = \(\frac{V_{1}T_{2}}{T_{1}}\) =\(\frac{92 \times 291}{276}\) = \(97.0cm^{3}\)

2.0 mole of Q3+ ions require the largest quantity of electricity for discharge at an electric. option B,C,D are all carrying a smaller quantity of electricity which not be proven for ant discharge

Tin dissolves in concentrated solution of alkalis to give trioxostannate(IV) salt and hydrogen.

Sodium hydrogen trionocarbonate iv is the only distinguishing reagent between ethanoic and ethanol. Option A, B, D are not conspicuous in distinguishing between ethanoic and ethanol

Nitrogen has an electronic configuration of 7 i.e 1s2 2ps2 2p3. option A,C,D are chlorine 17, calcium 20, neon 10

Calcium is the only metal that burn with brick red flame. Option A,C,D will not burn with brick red flame rather burn with brick blue flame

Concentrated sodium chloride solution will the solubility of soap along the course of soap production. Options A,C,D are not appropriate

Kerosene is only liquid that will dissolve fat. Option A,B,D will not dissolve fat because of their chemical composition