Chemistry · 2021
JEE Main · 3 August 2021, Shift 2 · Q53
The ratio of radii for the first and third orbits of hydrogen atom is 1: x. The value of x is \ \ \ \. (Integer answer)
The ratio of radii for the first and third orbits of hydrogen atom is $\displaystyle 1: x$. The value of $\displaystyle x$ is \_\_\_\_. (Integer answer)
Official answer
9
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.