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Which of the following orbital is not possible: (1) 3 f (2) 4 f (3)5 f (4) 6 f Ans: 3 f
Q. Consider a system containing only NH 4 Cl(s), NH 3 (g), and HCl(g). Assume that the equilibrium NH 4 Cl(s) ⇔ NH 3 (g), and HCl(g) exists. (a) Suppose you prepare the system b
s block
limitations of distribution law
The number of electrons in the nucleus of C 12 is (1) 6 (2) 12 (3)0 (4)3 Ans: 0
Which of the following are isoelectronic species I= CH + 3 , II-NH 2 , III- NH + 4 , IV-NH 3 (1) I, II, III (2) II, III, IV (3) I, II
Physical properties Alkyl Halides (i) CH 3 F,CH 3 Cl, CH 3 Br and C 2 H 5 Cl are gases at room temperature. The alkyl halides up to be colourless liquids whereas higher members
Pick out the isoelectronic structures from the following : CH + 3 , H 3 O + NH 3 CH - 3 I
Problem: Let us calculate Q value of the reaction 27 Al (d, α) 25 Mg Answer: Given that masses of 27 Al = 26.981541 2 H = 2.014102 4 He = 4.
Silicon has 4 electrons in the outermost orbit. In forming the bonds: (1) It gains electrons (2) It loses electrons (3) It shares electrons (4) None of these Ans: I
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