3 years ago

How many protons would the element with the atomic number 10 contain?

Physics

1 answer:

galben [10]3 years ago

3 0

The atomic number is the same as the proton number so the answer would be D) 10

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v = 440 m/s

Substituting

Wavelength $\lambda = \frac{h}{mv} = \frac{6.63*10^{-34}}{1.67*10^{-27}*440} = 0.902 *10^{-9}m = 902 *10^{-12}m$

$1 pm = 10^{-12}m\\ \\ So , \lambda =902 pm$

So the de broglie wavelength (in picometers) of a hydrogen atom traveling at 440 m/s is 902 pm

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