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lithium and beryllium markedly differ from others members of their respective group
what can you deduce about the relationship between ionization energy and reactivity of metals ..
The number of electrons in c l - ion is: (1) 19 (2) 20 (3) 18 (4) 35 Ans: 18
why is it useful to use moles to measure chemical quantities
density of gas is 2.86 ltr.the gas may be-
According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1x 10 -31 kg is: (1) 2.8x 10 -3 m 2 -s -1
why nnitroalkanes are highly polor compounds*
Although CO is well known, SiO does not exist under ordinary conditions. Why is that?
Explain variations of electronegativity in group & period
write a balanced equation for the reaction in which dinitrogen pentoxide reacts with water to produce nitric acid
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