Q222 · Practice questionSimple familiar1 mark
QUESTION 222
A neutron is a neutral baryon. Which gives the electric charge and baryon number of an antineutron?
(A)
Charge ; baryon number
(B)
Charge ; baryon number
(C)
Charge ; baryon number
(D)
Charge ; baryon number
WORKED SOLUTION
1 markAnswer A
ANSWER
A. Charge ; baryon number
Worked solution
An antiparticle has opposite additive quantum numbers. Reversing zero charge still gives zero, while the neutron's baryon number becomes .
Equivalent physically justified methods and consistent equivalent units accepted.
Displayed decimals are model answers; accept appropriate significant figures and consistent rounding from stated constants.
Select A.
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