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
She promised to take _____ my job immediately. That really took a big load _____ my shoulders.
A. away, down
B. up, from
C. over, off
D. on, away