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আর্সেনিকের পারমাণবিক সংখ্যা কত ?

Ferdows blog

প্রশ্ন: আর্সেনিকের পারমাণবিক সংখ্যা কত ?

ক. ৩৬

খ. ৪৪

গ. ৩৩

ঘ. ৩৮

উত্তর: (গ) ৩৩ ।

ব্যাখ্যা: আর্সেনিকের পারমাণবিক সংখ্যা হলো " ৩৩ " ।

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