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vesna_86 [32]
3 years ago
14

What is the mass number of beryllium

Chemistry
2 answers:
tatiyna3 years ago
6 0
The answer would be 9
kakasveta [241]3 years ago
3 0

Answer:

9.012182 u

Explanation:

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There are 4 quantum numbers that can be used to describe the space of highest probability an electron resides in.
First quantum number is the principal quantum number- n , states the energy level.
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values of l for n energy shells are from 0 to n-1
third is magnetic quantum number - m, which tells the specific orbital.
fourth is spin quantum number - s - gives the spin of the electron in the orbital

here we are asked to find l for 3p1
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and values of l are 0,1 and 2
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3 years ago
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