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Ortho, meta and para
1. Ortho (or 1, 2-) : if the two substituents are on the adjacent carbon atoms, the compound is said to be ortho (or 1, 2-).
2. Meta (or 1, 3-) : if the two substituents are on alternate carbon atoms, the compound is said to be meta or (1, 3-).
3. Para (or 1, 4-) : if the two substituents are on diagonally situated carbon atoms, the ompound is said to be para or (1, 4-).
Ortho, meta and para are generally displayed as o-, m- and p- correspondingly.
Crude oil is separated into several fractions, each of these fractions are composed of many undefined hydrocarbon components. For simplicity, the crude oil is assumed to be a mixtu
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
Radius of the first Bohr's orbit of hydrogen atom is: (1)1.06 Å (2) 0.222 Å (3) 0.28 Å (4)0.53A Ans: 0.53 Å
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When 6.85 grams of the Sr(OH)2.xH2O hydrate are dried in an oven, 3.13 grams of anhydrous Sr(OH)2 are formed.whats the value of x..please answer asap
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