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3 years ago

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A uranium atom is 238 times as massive as a hydrogen atom. The diameter of a uranium atom is the diameter of a hydrogen atom tim

es about:_________
A. 3.
B. 10.
C. 30.
D. 100.
E. 238.

1 answer:

ser-zykov [4K]3 years ago

8 0

Answer:

A. 3

Explanation:

Given

The atomic radius of Hydrogen rH = 53 pm

The atomic radius of Uranium rU = 156 pm

we apply

rU / rH = 156 pm / 53 pm

⇒ rU / rH = 2.943 ≈ 3

then

rU = 3*rH

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