Science
Junior High
Resolved
想請問文中
⋯則此原子所形成的粒子X⋯上方的符號是什麼意思？🙏🙏
ACC) 18 已知某原子X的質子和中子的數目分別為4和5,則此
原子所形成的粒子xt,
應具有的電子數目為多少?
【補充題)
(A) 2 (B) 3 C) 4 D 6
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