题目内容

多电子原子中,在主量子数为n,角量子数为l的亚层的简并轨道数是( )

A. 2l+1
B. 2l-1
C. n-l
D. n+l

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决定原子轨道的量子数是( )

A. n、l
B. n、l、ms
C. n、l、m
D. m、ms

下列各电子结构式中,表示基态原子的是,表示激发态原子的是 ,表示错误的是。(三个空之间用分号隔开,序号加括号)(1)1s22s1 (2)1s22s²2d1(3)1s22s12p2(4)1s22s²2p13s1 (5)1s22s42p2(6)1s22s²2p63s²3p63d¹

n、l两个量子数确定原子轨道的能量,n、l、m三个量子数确定一条原子轨道,n、l、m、ms四个量子数可以确定一个电子的运动状态。

A. 对
B. 错

The news of this killing in broad daylight got _ very quickly. But the murderder was not afraid. He was sure that he could get _ it because his father was the local police chief.

A. around, out of
B. about, off
C. around, away with
D. off, away from