题目

Researches have shown that the first impression you make on an interviewer really counts.Fortunately，there are some actions you can take to help master the first impression. Timing：Few things give a worse impression than showing up late for an important meeting.Allow yourself plenty of time to get to the interview in case you have trouble finding the office.Ideally，you should check in(报到) five to ten minutes early and always be polite and professional to everyone you meet—you never know how much influence the man may have on the hiring decision. Appearance：Like it or not写出符合下列要求的符号。（1）第二电子层　s能级________。（2）n＝3 p能级________。（3）第五电子层 d能级________。（4）n＝4 p能级________。（5）铜氨络离子的结构式________。