Accepted
at 12:40 a.m. May, 04, 2024
by
Michael_B
Author:
Brian_BH
Rationale for change
QID 402586:
Question stem gives selenium in isotopic notation and requires identifying the number of protons and neutrons in the given element. Requires at least recognizing that the values of A and Z (as given in these notes) correspond to given values that allow for the solving of this problem.
No changes in fields
Text
\(\ce{^A_Z X}\)
In element notation, A is the {{c1::mass number}}.
Extra
A = Mass number (# of Protons + # of Neutrons)
Z = Atomic number (# of Protons, which determines atom identity)
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