A light metal is any metal of relatively low density. More specific definitions have been proposed; none have obtained widespread acceptance. Magnesium, aluminium and titanium are light metals of significant...
1 Answers 1 viewsMetals Non–metals 1. Metals can lose electrons easily. 1. Non-metals cannot lose electrons easily. 2. Metals cannot gain electrons easily. 2. Non-metals can gain electrons easily. 3. Metals generally form ionic compounds. 3. Non–metals generally form covalent compounds. 4. Metals...
1 Answers 1 views(i) Ionisation enthalpy: The first ionisation enthalpies of alkaline earth metals are higher than those ) of alkali metal because of increased nuclear charge, However 2nd ionisation enthalpies of alkaline...
1 Answers 1 viewsThermal stability: - Carbonates: - The carbonates of alkali metals except lithium carbonate are stable towards heat. The carbonates of alkaline earth metals and Lithium carbonate decompose on heating to form...
1 Answers 1 views(c) either metals or non-metals
1 Answers 1 views(c) Generally, metals are ductile. However, mercury metal - a liquid at room temperature - cannot be drawn into wires and is not ductile.
1 Answers 1 views(a) Alloys of metals usually have greater resistivity than that of their constituent metals. (b) Alloys usually have lower temperature coefficients of resistance than pure metals. (c) The resistivity of the alloy,...
1 Answers 1 viewsIt is because HNO3 is a strong oxidising agent. It oxidises the Hq produced to H2O and itself get reduced to any of the oxides of the nitrogen, like NO2, NO,...
1 Answers 1 views(i) Anode: Impure silver Cathode: Pure silver (ii) Electrolyte: Silver salt, such as AgNO3, AgCl, etc. (iii) We get pure silver at cathode.
1 Answers 1 viewsGiven,n=1.5 and the speed of light in vacuum, c = 3x 108 ms-1. We know that the refractive index is given by the expression n =c/v where c is the...
1 Answers 1 views