Explain why-
C and Si are Tetravalent but Ge, Si and Pb show divalency?
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The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west but the watches show the same time. How does this happen
From the longitudinal extent of India it is observed that the longitudinal expanse is about 30o from west to east. This means that there would be a time-lag of two hours...
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Explain why cricket became popular in India and the West Indies. Can you give reasons why it did not become popular in countries in South America
Playing cricket was a manifestation by the elites of aping their colonial masters. Hence, cricket became popular in British colonies; like India and the West Indies. South America was never...
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Three coins are tossed once. Let A denote the event ‘three heads show”, B denote the event “two heads and one tail show”
When three coins are tossed, the sample space is given by S = {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT} Accordingly, A = {HHH} B = {HHT, HTH, THH} C = {TTT} D = {HHH,...
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Which of the following species, do not show disproportionation reaction and why ? ClO– , ClO2 – , ClO3 – and ClO4 – .
Among the Oxoanions of chlorine listed above, ClO4 – does not dis proportionate because in this Oxo anion chlorine is present in its highest oxidation state that is, +7. The disproportionation...
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Give reason (a) C and Si are always tetravalent but Ge, Sn, and Pb show divalency. (b) Gallium has higher ionization enthalpy than Al.Explain.
(a) Ge, Sn and Pb show divalency due to inert pair effect, Pb2+is more stable than Pb4+. (b) Due to poor shielding effect of d-electrons in Ga, effective nuclear charge increases...
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P, Q, R and S are four men. P is the oldest but not the poorest. R is the richest but not the oldest. Q is older than S but not than
(b) Q > S, P > Q, R > Q Age: As, Q > S, P > Q, R > Q Also, P is the oldest. ∴ P > R > Q >...
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CCl4 does not show hydrolysis but SiCl4 is readily hydrolyzed because a) Carbon cannot expand its octet but silicon can expand
a) Carbon cannot expand its octet but silicon can expand
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Harish is taller than Manish but shorted than Suresh. Manish is shorter than Anil but taller than Raghu.
The correct answer is (C) Raghu
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