Inorganic Chemistry

Given mass of CO2 = 200 mg = 0.2 g   Molar mass of CO2 = 44 g/mol   Number of moles of 200 mg CO2 = Given mass/Molar mass of CO2 = 0.2 g/44 g mol-1 = 0.00454 mole   Number of molecules of CO2 removed = 1021   Number of moles of CO2 removed = 1021/(6.022*1023) = […]

Q. Assertion : The element having with electronic configuration 1s2 2s2 2p6 3s2 and 1s2 2s2 belong to the same group    Reason: Both have same number of electrons in the valence shell   Solution:    Elements having same number of valence shell are present in same group.   Here, each elements have 2 valence electrons.

In KMnO4, oxidation state of Mn is +7. As the oxidation state of atom increases, the element become more electronegative in nature. Mn gain 5 electron in acidic medium and reduces to +2 oxidation state.   Gain of 5 electron shows that the electronegativity of Mn has increased. Therefore, KMnO4 is a good oxidizing agent.   Note:

  Solution: Bond angle is inversely proportional to electronegativity of substituents.   i.e., Electronegativity of side atom increase then the bond angle (X-P-X) decreases.   So, X-P-X or F-P-F bond angle is least in POF3. That’s why the O-P-F is maximum.     Hence, the correct order of bond angle for O-P-X in the given molecules

Question:   Solution:     Read More: Which is the major product of the following reaction?

Which species has the maximum number of lone pairs of electrons on the central atom? (a) ClO3– (b) XeF4 (c) SF4 (d) I3– First of all, let’s discuss the term lone pair, hybridisation and bond pair What is lone pair? A pair of electrons occupying an orbital in an atom or molecule and not directly