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If the atomic weight of an element is 23 times that of the lightest element and it has 11 protons, then it contains : (1)11 protons, 23 neutrons, 11 electrons (2)11 protons,
The valency of phosphorus in H3 PO 4 is: (1) 2 (2) 5 (3) 4 (4) 1 Ans: 5
Charectaristic of covalent bond
why HNO3 is not used for detection of acidic radical of 1st and 2nd group ions?
please help me to do assignment about noble gas.
define borazine
Sublimation - Purification of organic compounds Specific organic solids on heating directly change from solid to vapour state without passing via a liquid state, such types of
name the acid present in ant sting and give its chemical formula also give common method to get relief from the discomfort caused by ant sting
Calculate the free energy change of following reaction at298 kelvin H2+I2=2HI if the enthalpy change is 51.8816kj and the entropy change is 166.15j is this reaction thermodyanamica
The energy that opposes dissolution of a solvent is: (1) Hydration energy (2) Lattice energy (3) Internal energy (4) Bond energy Ans: B
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