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1.C【解析】洪特规则：当电子排布在同一能级的不同轨道时，基态原子中的电子总是优先单独占据一个轨道，而且自旋方向相同。【详解】A.C原子的2p能级的2个电子单独占据一个轨道，而且自旋方向相同，没有违反洪特规则，A选项不符合题意：B.P原子的3p能级的3个电子单独占据一个轨道，而且自旋方向相同，没有违反洪特规则，B选项不符合题意：C.N原子的2p能级的3个电子没有单独占据轨道，违反洪特规则，C选项符合题意：D.Mg原子的3s电子自旋相同，违反了泡利原理，不是违反洪特规则，D选项不符合题意：答案选C。

1.实与阿效应为150左右：2.请按如下格式在相应位置作答。After I came back from my hometown,it took me a long time to calm down.I still couldn't believe people inmy hometown would do such foolish things!I decided to do something to raise awareness of protecting the earth.From then on,I often went to the library to read newspapers or surf the Internet to look for some good methodsof improving living environment.I often talked to my classmates,friends and relatives about our earth,exchanging opinions with them.In fact,to my great joy,most of them feel the same way and realize theimportance of protecting environment.Nowadays,science and technology are developing rapidly.People's living conditions have been improved alot,but I do think people's awareness of protecting environment should be enhanced at the same time.We mustbe aware of the fact that our beautiful environment is being destroyed and if we don't take effective measures tostop it,all of us will lose the chance to live on the earth one day.We are all living under the same blue sky.Therefore,all of us have a duty to protect our environment to make the world a better place.