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Till 20elememts write the no of electrons in outermost shell.if less than 4 then this is the valency otherwise subtract from 8
which compounds will dissolve in alkaline solution after it has undergone reaction with hinsberg reagent
Q. Show Reduction to Metals? After removed of the gangue, i.e. impurities physically mixed with the metal elements, the concentrated ore becomes ready for the isolation of meta
The maximum number of electrons present in an orbit l= 3 , is: (1) 6 (2) 8 (3) 10 (4) 14 Ans: 14
Classify phylum protozoa upto classes giving characters and suitable examples.
define it
The number of appositively charged ions surrounded a certain ion in an ionic crystal lattice is known as co- ordination number.
how many elements are discovered
what is the chemistry of reaction for NH4+ with SO4 2- and CO3 2- ?
Which of the following set of quantum number is not valid: (1) n=1, l=2 (2) 3=2, m=1 (3) m=3,l=0 (4) 3=4,l=2
How do you explain in the absence of aldehyde group in the pentaacetate of D-glucose? Ans) when you react glucose with acetic anhydrate it forms pentaacetate with 5 OH grops it
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