User Ray Bradbury - Chemistry Meta Stack Exchange

Ray Bradbury

Member for 3 years, 5 months
Last seen more than 2 years ago

India

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High school senior

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Jun 18

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Oct 9, 2020

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11

Why don't beryllium and magnesium dissolve in ammonia?

7

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?