【单选题】【消耗次数:1】
原子序数为 19 的元素的价电子的四个量子数为
n=1,l=0,m=0,ms =+1/2
n=2,l=1,m=0,ms =+1/2
n=3,l=2,m=1,ms =+1/2
n=4,l=0,m=0,ms =+1/2
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