Three α - p a r t i c l e s combine to form a 12 C nucleus, the mass defect is (atomic mass of 2 H e 4 is 4 . 002603 u )

Question

Three α - p a r t i c l e s combine to form a 12 C nucleus, the mass defect is (atomic mass of 2 H e 4 is 4 . 002603 u ), 0 . 007809 u, 0 . 002603 u, 4 . 002603 u, 0 . 5 u

MARKS App · Accepted Answer

Mass defect ∆ m = T o t a l m a s s o f α - p a r t i c l e s - m a s s o f 12 C n u c l e u s = 3 × 4.002603 - 12 = 12.007809 - 12 = 0.007809 u

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