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Positronium consists of an electron and a positron (a particle which has the same mass as an electron, but opposite charge) orbiting round their common centre of mass. Calculate th
What are the objectives of heat treatment of metals? Objectives of heat treatment- Cause relief of internal stresses developed during cold working, welding, forging, cas
what is covalent bond and its types?
The mole fraction of solute and solvent is equal to
experiment with diagram
The shape of an orbital is given by the quantum number : (1) n (2) l (3) m (4) s Ans: l
Equivalent Weight
Which of the following represents the electronic configuration of an element with atomic number 17: (1) 1s 2, 2s 2 , 2p 6 , 3s 1, 3p 6 (2) 1s 2 , 2s 2 , 2p
Coordination no. is the no. assigned to an atom which tells us that how many other atoms are directly attached to it. eg. Pcl5 the cordination no. will be 5
Why NH4Cl and NH4OH are added to the test solution?
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