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An element has the electronic configuration 1s2, 2s2, 2p6, 3s2, 3p2. Its valency electrons are:
(1) 6
(2) 2
(3) 3
(4)4
Ans: 4
In recent years, the scientists have designed the cells which convert chemical energy of a fuel directly into electrical energy. These cells are called fuel cells. These are the vo
Saytzeff rule
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The radius of first Bohr's orbit for hydrogen is 0.53 Å. The radius of third Bohr's orbit would be: (1) 0.79 Å (2) 1.59 Å (3) 3.18 Å (4)4.77 Å
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The HarperLake solar farm is located in Mojave Desert close to Daggett, CA. The solar radiation in Daggett is provided by the following table from: The HarperLake solar fa
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