Week 8
 This week I talk to about International Chemistry Olympiad. Do you know International Chemistry Olympiad? This is a Olympic of chemistry.

What is International Chemistry Olympiad?
 International Chemistry Olympiad is world competition of chemistry. It is held per year in July. This competition developed from an achievement test which was started in Hungary, Czech, Slovakia and Poland. Now over 200 high school students join the competition from 60 countries. The test is composed experimental examination and theroretical examination. And people compete not as team but as an individual. persons who did an excellent performance is given a medal. Gold medal is given 10 percent of participant, Silver medal is given 20 percent and Copper medal is given 30 percent. In the period of competition, there is a program which is called Excursion. People who join the competition can make the friendship between them in the program.

The way to join (Japan)
 The delegations who join International Chemistry Olympiad are chosen by some selection committee. In Japan, it is need to join inter high school chemistry grand prix and to be a superior performance in 10th or 11th grade to be chosen representative candidate. Next training camp for representative candidate is held in the next spring. Last selection committee is held in the training camp and delegations of International Chemistry Olympiad are chosen. Persons who is chosen delegation join training camp.

Test
 Before spring training camp, representative candidates are given reference book, collection of past questions, expecting questions which is passed out from host country. The syllabus is divided 13 fields.

This is a question which is in last year's test.



A boron-based compound is composed of boron, carbon, chlorine, and oxygen
(B4CCl6O). Spectral measurements indicate the molecule has two types of B atoms, with
tetrahedral and trigonal planar geometry, in a 1:3 ratio, respectively. These spectra are
also  consistent with a CO triple bond. Given that the molecular formula of the
compound is B4CCl6O, suggest a structure for the molecule.

ホウ素、炭素、塩素、酸素からなるホウ素化合物 (B4CCl6O) がある。そのス
ペクトルから、この分子には正四面体と平面三角形の２種類の結合様式を持つ
ホウ素原子が含まれており、その比は１：３であることが示された。同時に、
スペクトルからCO三重結合が含まれていることも分かった。B4CCl6Oで示され
るホウ素化合物の可能な立体構造を描け。


The answer is bottom of this page.


Record
 Recently Japan gets some medals. Last year, Japanese students won 3 gold medals and 5 silver medals. Japanese delegations continuously get gold medals 4 years. And Getting medals continue 10 years. Japan gets medal except first year of participation.








This is a answer of the question.
                                                     
                                                        O

                                                        |||
                                                        C
                                                         |
                                                Cl2B-B-BCl2
                                                         |
                                                        Cl2B

Next week I talk to about Magazine.
Thank you for reading.