CBSE Class 11 (Science) S and P Block Elements — practice questions
71 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) S and P Block Elements in the app →Which alkali metal is the most abundant in nature?What outer electron configuration do all alkali metals share?Alkali metals are usually stored under which liquid?Alkali metals readily lose one electron to form ions of what charge?Which alkali metal has a pale golden tint?Francium was discovered in 1939 by which scientist?Who first isolated pure potassium in 1807 by electrolysis?Rubidium and caesium were first found using which instrument?Caesium takes its name from which emission line colour?The name rubidium comes from a Latin word meaning which colour?Going down the alkali metal group, atomic radiusReactivity of alkali metals with water, going down the group,Melting points of alkali metals as one moves down the groupWhich alkali metal is less dense than sodium despite being heavier?Which alkali metal halide is poorly soluble in water?Lithium shows a diagonal relationship with which element?Which alkali metal forms a stable nitride, unlike the rest?Why do lithium compounds show more covalent character than sodium ones?Alkali metals show distinct flame colours because the outer s electronAlkali metals crystallise in which lattice type?Why is the second ionisation energy of alkali metals so high?In alkalides, alkali metals show which unusual oxidation state?Atomic clocks that form the basis of the second use which metal?Lithium compounds are used in medicine as aWhy is francium found only in minute traces in nature?Newlands compared recurring element properties to musicalArfwedson detected lithium while analysing which ore?Alkaline earth metals form cations of which charge?Which alkaline earth metal does not react with water or steam normally?Which group 2 chloride is covalent in nature?Beryllium compounds are covalent because beryllium hasRadium occurs naturally only via the decay chain of which elements?Going down group 2, reaction with water becomesCalcium reacts with water to give its hydroxide and which gas?How does magnesium react with water compared with calcium?Which alkaline earth metal has only one stable isotope?Radioactive group 2 isotopes lodge in bone by mimicking which element?Strontium-90, a fission product of uranium-235, has a half-life ofBeryllium-8 splits almost instantly into which particles?Radium-226 belongs to the decay chain of which nuclide?Which is the third member of the alkaline earth metals?Compared with alkali metals, alkaline earth metals are generallyStrontium reacts with oxygen to form which oxide?Which isotope is the lightest nuclide known to undergo double beta decay?How many valence electrons do boron group elements have?Group 13 elements are also referred to as theWhich group 13 element is a semi-metal while the rest are metals?What is the formula of diborane, the simplest borane?Aluminium oxide, Al2O3, isGroup 13 halides usually follow which general formula?Which group 13 element has +1 as its most stable oxidation state?Stable +1 states in heavier group 13 elements arise from theWhich group 13 element is highly toxic and has been used as a pesticide?Lack of which group 13 element can stunt plant growth?Down the boron group, density generallyBoron compounds with hydrogen are sometimes calledHow many electrons are in the outer shell of carbon group elements?Ground-state outer configuration of an isolated group 14 atom isTypical single-bond hybridisation in carbon group atoms isWhich hybridisation do carbon atoms use in graphite?Boiling points down the carbon group tend toWhich group 14 element has the largest atomic radius?Silicon melts at about which temperature?Tin objects crumble to grey powder below about which temperature?Which carbon allotrope is made of stacked sheets of carbon?Carbon sheets folded into a sphere form aWhich carbon allotrope is a honeycomb-shaped layer of atoms?What is the formula of silicon nitride?Silicon and germanium crystallise in which structure?Group 14 alkyls QR4 are described asThe name tetrels comes from a Greek word tetra meaning