写考古时有几题普化有问题
我把大概的想法写上来讨论
想麻烦板友们解惑看看我的观念有没有错^^
1.Which of the following regarding to the electronic states in hydrogen atom
is correct?
(A)the electron in the state of n=2 may be closer to the nucleus than in 1
(B)to ionize the electron from n=3 needs the UV light
(C)the orbitals beyond n=1 are all degenerate
(D)the hydrogen molecule will have two degenerate states for each principal
quantum number n
这题我确定A一定错，B应该是算出能量之后用E=ch/波长去算再对照，
但其他两个选项不知该如何判断
2.At 25度C and 1 atm, four containers of 1.0 L are respectively filled with H2,
CH4, NH3, and O2, which of the following statements regarding these four
gases is correct?
(A)four containers have the same number of molecules
(B)H2 has the largest kinetic energy
(C)O2 strays away most from the ideal gas behavior
(D)methane and ammonia have the closest values of PV/nRT
我的答案是A，同样条件下相同的体积有相同的分子数
B 同样温度应该大家的动能都一样？
C 应该是NH3，因为有氢键
D PV/nRT是判断跟理想气体的差距的指标，methane比NH3接近理想气体，值不是最近的
3.Which of the following statements regarding transition metal compound is
correct?
(A)the electronic configuration of iron in Fe(CN)6^3- is t2g^3 eg^2
(B)the magnetic moments of paramagnetic Fe(H2O)6^3+ is about (35)^1/2
(C)the blood is consisted of hemoglobin, so the blood is paramagnetic
(D)the major absorbance wavelength for the d-d transition in heme os longer
than 500nm
我的答案是A，Fe3+ 是原本的电子组态扣掉4s两个电子跟3d一个，CN是high spin
B ......？
C、D hemoglobin是血红素，但不知它的磁性跟所谓的d-d transiion
4.Which of the following electronic configuration is of the ground state of X2
wherein X belons to the elements of the 2nd row
(A)(alpha 2s)^2 (a 2s*)^2 (a 2p)^1 (pi 2p)^1 ←我不知道要怎么打那个符号...
(B)(a 2s)^2 (a 2s*)^2 (a 2p)^1 (pi 2p*)^1
(C)(a 2s)^2 (a 2s*)^2 (pi 2p)^1 (pi 2p*)^1
(D)(a 2s)^2 (a 2s*)^2 (pi 2p)^2 (pi 2p*)^0
2nd row 是碱土金属族那一排吗？
我是选D，考虑的点是先填pi轨域(删A.B)，然后先不填antibonding(删D)
题目有点多@@
请板友们相助了!!