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Chemistry
Ray Bradbury's user avatar
Ray Bradbury's user avatar
Ray Bradbury's user avatar
Ray Bradbury
  • Member for 4 years, 5 months
  • Last seen more than 3 years ago
  • India
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High school senior

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11
Why don't beryllium and magnesium dissolve in ammonia?
8
Why is phenyl carbanion aromatic?
6
Olympiad question: In the regular pentagon $ABCDE$, the perpendicular at $C$ to $CD$ meets $AB$ at $F$. Prove that $AE + AF = BE$.
5
How to solve this problem without using the binomial expansion?
5
What is $x$, if $1! + 2! + 3! + \cdots + (x-1)! + x! = k^2$ and $k$ is an integer?