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The hydride ions H- are isoelectronic with: (1) Li (2) He + (3) He (4) Be Ans: He
give an example of tri atomic gass
what groups comprise each block of elements(s,p.d and f blocks)in the periodic table
Q. How to calculate atomic number? Atoms have no net electrical charge for the reason that they contain equal numbers of electrons and protons. Therefore positive charges (prot
If uncertainty in the position of an electron is zero, the uncertainty in its momentum would be: (1) Zero (2) (3) > h/ 2γ (4) Infinite
What is gattermann Koch reaction?
An electron has kinetic energy 2.8 x 10 -23 J . de-Broglie wavelength will be nearly: (me: 9.1 x 10 -31 kg) (1) 9.28x 10 -4 m (2) 9.28 x10 -7 m
Nucleophilic Replacement Reactions (i) Several replacement reactions, majorly at the saturated carbon atom in aliphatic compounds like alkyl halides, are brought about by nucl
PEPTIDE?
why does sulfuric acid get hotter when you neutralise it
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