Số Electron Tối đa Trên Lớp M Là | Cungthi.online

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Số electron tối đa trên lớp M là A.18         B.32  C.8           D.50 Đáp án và lời giải Đáp án:A Lời giải:Lời giải: Lớp M có 3 phân lớp: 3s (tối đa 2e) + 3p (tối đa 6e) + 3d (tối đa 10e) = 18e Đáp án cần chọn là: A

Vậy đáp án đúng là A.

Câu hỏi thuộc đề thi sau. Bạn có muốn thi thử?

Bài tập trắc nghiệm 15 phút Thành phần cấu tạo nguyên tử - CHUYÊN ĐỀ 1: NGUYÊN TỬ - Hóa học 10 - Đề số 7

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Một số câu hỏi khác cùng bài thi.

• Các hạt cấu tạo nên hạt nhân của hầu hết các nguyên tử là
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• Cho hai nguyên tố M và N có số hiệu nguyên tử lần lượt là 11 và 13. Cấu hình electron của M và N lần lượt là
• Phân tử MX3 có tổng số hạt proton, nơtron và electron bằng 196, trong đó hạt mang điện nhiều hơn số hạt không mang điện là 60. Khối lượng nguyên tử của X lớn hơn của M là 8. Tổng số hạt trong X- nhiều hơn trong M3+ là 16. Số khối của X là
• Một nguyên tử có 19 electron. Số electron ở lớp ngoài cùng của nguyên tử này là
• Số electron tối đa trên lớp M là

• Loại hạt mang điện có trong hạt nhân nguyên tử là        

• Lớp electron M có tối đa bao nhiêu electron
• Các obitan trong cùng một phân lớp electron
• Điều khẳng định nào sau đây là sai

Một số câu hỏi khác có thể bạn quan tâm.

• You will find the image of an Asian fire dragon on_______ninth page.

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• Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 16 to 20.

  Nowadays people are more aware that wildlife all over the world is in (16)______ . Many species of animals are threatened, and could easily become (17)_______ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught (18)______ and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (19)______ wildlife. The most successful animals on earth - human beings - will soon be the only ones (20)______, unless we can solve this problem.

  The most successful animals on earth - human beings - will soon be the only ones (20)______, unless we can solve this problem.

• Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

• My head teacher has grave doubts as to whether I would pass my university entrance examination. I myself feel so worried.

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 37.

    Humans have struggled against weeds since the beginnings of agriculture. Marring our gardens is one of the milder effects of weeds – any plants that thrive where they are unwanted. They clog waterways, destroy wildlife habitats, and impede farming. Their spread eliminates grazing areas and accounts for one-third of all crop loss. They compete for sunlight, nutrients, and water with useful plants.

  The global need for weed control had been answered mainly by the chemical industry. Its herbicides are effective and sometimes necessary, but some pose serious problems, particularly if misused. Toxic compounds threaten animal and public health when they accumulate in food plants, groundwater, and drinking water. They also harm workers who apply them.

    In recent years, the chemical industry has introduced several herbicides that are more ecologically sound. Yet new chemicals alone cannot solve the world’s weed problems. Hence, scientists are exploring the innate weed-killing powers of living organisms, primarily insects and microorganisms.

  The biological agents now in use are environmentally benign and are harmless to humans. They can be chosen for their ability to attack selected targets and leave crops and other plants untouched. In contrast, some of the most effective chemicals kill virtually all the plants they come in contact with, sparing only those that are naturally resistant or have been genetically modified for resistance. Furthermore, a number of biological agents can be administered only once, after which no added applications are needed. Chemicals typically must be used several times per growing season.

  Which of the following terms does the author define in the first paragraph?

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 26 to 30.

  The position of sport in today‟s society has changed out of all regconition. People no longer seem to think of sport as “just a game” – to be watched or played for the (21) ___________ of enjoyment. Instead, it has become big business worldwide. It has become accepted practice for loading companies to provide sponsorship. TV companies pay large sums of money to screen important matches or competitions. The result has been huge financial rewards for athletes, some of (22) ___________ are now very wealthy, particularly top footballers, golfers and tennis players. (23) ___________, it is not unusual for some athletes to receive large fees on top of their salary, for advertising products or making personal appearances.

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• II. Phần tự luận

  Viết các phương trình phản ứng xảy ra trong các trường hợp sau:

  1. Cho etan + Cl2 (as, tỉ lệ 1:1)

  2. Cho stiren + dd Br2.

  3. Cho ancol etylic + kim loại Na

  4. Cho phenol + dd NaOH

  5. Cho anđehit axetic + AgNO3/ NH3

  6. Cho axit axetic + NaOH

• Các chế độ bảo hiểm xã hội hiện hành?

• Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.

  For many people who live in cities, parks are an important part of the landscape. They provide a place for people to relax and play sports, as well as a refuge from the often harsh environment of a city. What people often overlook is that parks also provide considerable environmental benefits.

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