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Electrovalent bond formation depends on:
(1) Ionization energy
(2) Electron affinity
(3) Lattice energy
(4) All the three above
Ans: All the three above
I have to write about the water treatment and the fda and epa and compare and contrast the rules and regulations for tap and bottled water and stuff. Can you help?
Relationship between nucleon number,proton number and the number of neutrons.
how many methods to remove color impurities in chemical compounds?
An element has the electronic configuration 1s 2 , 2s 2, 2p 6 , 3s 2 , 3p 2 . Its valency electrons are: (1) 6 (2) 2 (3) 3 (4)4 Ans: 4
When a strip of metal (M) is brought in contact with the solution containing its own ions (Mn+), then either of the following three possible processes can take place: The meta
Preparation of cycloalkane by perkins method
Q. Show the Extraction of Oxygen? Oxygen is separated from air on a large scale by the fractional distillation of liquid air. It is obtained as a by-product along with hydrogen
Hess''s law
The nucleus of an element contains 9 protons. Its valency would be : (1) 1 (2) 3 (3) 2 (4) 5 Ans: 1
why do soap not work in hard water ?
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