【題目】組成原子核的粒子是（ ）

A．帶正電的質(zhì)子和帶負(fù)電的電子

B．帶正電的質(zhì)子和不帶電的中子

C．帶正電的質(zhì)子、帶負(fù)電的電子和不帶電的中子

D．帶負(fù)電的電子和不帶電的中子

【答案】B

【解析】

試題分析：原子由帶正電的原子核和核外帶負(fù)電的電子構(gòu)成，原子核是由帶正電的質(zhì)子和不帶電的中子構(gòu)成的．

解：在原子中心有個很小的核叫原子核，它由帶正電的質(zhì)子不帶電的中子構(gòu)成，故B正確．

故選B．

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