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第九題跟的十二題，答案是E跟A 幫忙解一下，看不太懂😅 感恩

生話點01 9) The density of silver is 10.5 g/cm?. A piece of silver that occupies avolume of 63.l cm3 would haveamass of 8- A) .445 B) 23.6 C) 112 D) 2.25 E) 663 10) Which species is an isotope of 39Cl? A) 39Ar B) 36Cl- C) 80Br D) 35452- E) 40Ar+ 11) Which pair of elements below should be the most similar in chemical properties? A) CandO B) Band As C) Cs and He D) Kand Kr E)Iand Br 12) The gold foil experiment performed in Rutherford's lab A) led to the discovery of the atomic nucleus B) utilized the deflection of beta particles by gold foil C) proved the law of multiple proportions D) was the basis for Thomson's model of the atom E) confirmed the plum-pudding model of the atom 人人全全y有1 10) 11) 12)

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第九題跟的十二題，答案是E跟A 幫忙解一下，看不太懂😅 感恩

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