下列多电子原子核外电子组态错误的是A.24Cr 1s22s22p63s23p63d44s2B.25Mn 1s22s22p63s23p63d54s2C.28Ni 1s22s22p63s23p63d84s2D.29Cu 1s22s22p63s23p63d104s1
A
B
C
D
Which of the following atoms has the largest number of unpaired electrons in its ground state configuration?
A. Fe
B. Mn
Co
D. Cr
某元素基态原子的价层电子组态为nsnnpn+1,该元素位于元素周期表的A.第三周期ⅣA族 B.第二周期Ⅲ A族C.第二周期ⅤA族 D.第三周期Ⅶ A族
A
B
C
D
下列各原子电子组态中,属于激发态的是A. 1s22s22p63s23p1B. 1s22s22p63s23p63d104s1C. 1s22s22p63s23p63d54s1D. 1s22s22p63s23p33d1
A
B
C
D