Question #5d492

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1 Answer
Nathan L.
May 25, 2017

#5# protons, #6# neutrons

Explanation:

All atoms of boron always contain #5# protons, as that defines its atomic number (#5#).

The mass number for boron-11 is #11# (it's given to you), and recall that the number of protons plus the number of neutrons equals the mass number.

A #"^11B# atom thus contains

#11 "(mass number") - 5 "(protons)" = color(red)(6)# neutrons

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