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Which of the following conduct electricity in the fused state: (1) BeCl 2 (2) MgCl 2 (3) SrCl 2
a nitrogen molecule travel at about 505 m/s at room temperature. find the velocity of a helium atom at the same temperature
CARBON, SILICON AND GERMANIUM With the valence electron configuration s 2 p 2 the nonmetallic group of elements 14 may form compounds with four tetrahedrally directed covalent
Q. Show the diffrent kind of matter? Liquid matter has a specific volume like a solid but flows and takes the shape of its container. A liquid is incompressible for the reaso
Hydrogen
Why is the total energy of a many-electron atom not equivalent to the sum of the orbital energies for every electron?
Rutherford's experiment on scattering of particles showed for the first time that the atom has: (1) Electrons (2) Protons (3) Nucleus (4) Neutr
Alkali metals belong to S-block ? why?
application of ellingham daigram
defnition and example
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