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範例:原子與原子核構造[101學測]

下列關於84Po(質量數210)原子及88Ra(質量數226)原子的敘述,何者正確?

(A)84Po88Ra兩種原子核中的中子數相差16

(B)84Po88Ra兩種原子核中的質子數相差16

(C)84Po88Ra兩種原子中的電子數相差4

(D)釙和鐳兩個元素,在自然界都不存在

(E)釙和鐳的放射性都是源自其原子核釋出X光

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Posted in 歷屆學測(推甄)考題, 歷屆學測試題, 物質的組成.

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