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Number of unpaired electrons in Mn 4+ is: (1) 3 (2) 5 (3) 6 (4) 4 Ans: 3
Most of the transition metal do not displace hydrogen from dilut acid. why? Ans) The activity series of transition metals is less than that of hydrogen so they can not displace h
The hydride ions H- are isoelectronic with: (1) Li (2) He + (3) He (4) Be Ans: He
what is the precaution
alkali metals belong to s-block in the periodic table ,why?
general physical properties of p block elements chemmical
Copper crystallizes into a FCC structure and the unit cell has length of edge 3.61 x10-8 cm. Calculate the density of copper if the molar mass of Cu is 63.5 g
Evaluate the relation between rate constant k 1 and k 2 of a first order reaction when temperature changes from 270 K to 300 K and activation energy is zero?
test for acidic radicals
what is redox titration
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