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How do i know which compounds i should put a roman numeral in?
what is mole
Q. Why we use Boron? Boron is used to increase the hardness of steels. Crystalline boron is used in transistors. Boron is a good neutron absorber and is used as shields and con
The free energy change for the formation of oxide of aluminium is highly negative ( -1000 to -1100) so , it can easily reduce any metal oxide abve it easily in ellingham diamgram a
Electron occupies the available orbital singly before pairing in any one orbital occurs, it is : (1) Pauli's exclusion principle (2) Hund's Rule (3) Heisenberg's principle
Which of the following statements is not true for ionic compoundss: (1) High melting point (2) Least lattice energy (3)Least solubility in organic compounds (4) Solubl
Ammonia is a gas for which reliable analytical methods are available to determine concentration in other gases. To measure flow in a 15 inch schedule 40 natural gas pipeline, pure
In Bohr's model, atomic radius of the first orbit is γ the radius of the 3rd orbit, is: (1) γ/ 3 (2)γ (3) 3γ (4) 9γ Ans: 9γ
tell me the berzelius hyphothesis in hindi
Co2 is isostructural with: (1) SnCl 2 (2) So 2 (3 ) HgCl 2 (4) All the above ans: HgCl 2
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