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Music

Opera at Music Hall: 1243 Elm Street. The season runs June through August, with additional performances in March and September. The Opera honors Enjoy the Arts membership discounts. Phone: 241-2742. http://www.cityopera.com.

Chamber Orchestra: The Orchestra plays at Memorial Hall at 1406 Elm Street, which offers several concerts from March through June. Call 723-1182 for more information. http: //www.chamberorch.com.

Symphony Orchestra: At Music Hall and Riverbend. For ticket sales, call 381-3300. Regular season runs September through May at Music Hall in summer at Riverbend. http://www.symphony.org/home.asp.

College Conservatory of Music (CCM): Performances are on the main campus(校园) of the university, usually at Patricia Cobbett Theater. CCM organizes a variety of events, including performances by the well-known LaSalle Quartet, CCM’s Philharmonic Orchestra, and various groups of musicians presenting Baroque through modern music. Students with I.D. cards can attend the events for free. A free schedule of events for each term is available by calling the box office at 556-4183. http://www.ccm.uc.edu/events/calendar.

Riverbend Music Theater: 6295 Kellogg Ave. Large outdoor theater with the closest seats under cover (price difference).Big name shows all summer long! Phone:232-6220. http://www.riverbendmusic.com.

Which number should you call if you want to see an opera?（）

A.241-2742.

B.723-1182.

C.381-3300.

D.232-6220.

下表是元素周期表的一部分。表中所列的字母分别代表一种化学元素。

（1）用电子式描述a～g中电负性最大和最小的元素形成化合物的过程：

                                                           。

（2）c的单质的结构式为：          ，已知互为等电子体的分子具有相似的价键结构，写出由上述元素组成与c的单质互为等电子体的电子式（任一种）：                 。

（3）g元素在周期表中的位置是第四周期，     族，该元素在周期表分区中属于    区；写出g的基态原子的外围电子排布式：                  。

（4）分别由a、b、d、f元素形成的单质晶体的熔沸点由高到低顺序为（用单质的化学式表示）：                。

（5）写出由a、b、c、d元素组成，原子个数比为5∶1∶1∶3的化合物与足量烧碱溶液反应的离子方程式：                                            。