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phanuan028
2 năm trước
Hãy viết kí hiệu hóa học và tên các nguyên tố ở nhóm 2 và 7.Em có sự nhận xét gì về sự biến đổi tính kim loại , phi kim trong các nguyên tố trong nhóm 2 và 7 M.n giúp hộ e vs e ạ . Em đang cần gấp .Tks
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Choose the words whose underlined part is pronounced differently from that of the others in each group 1. A. put B. adult C. junk D. sun 2. A. itchy B. riding C. sick D. swimming 3. A. chemical B. children C. headache D. architect 4. A. regularly B. identify C. really D. healthy 5. A. cycling B. doctor C. aerobics D. calories 6. A. coordinate B. triathlon C. allergy D. calorie 7. A. leaf B. life C. knife D. of 8. A. monopoly B. melody C. compound D. concentrate 9. A. paragraph B. cough C. although D. enough 10. A. vegetarian B. depression C. essential D. attention 11. A. myth B. cycling C. itchy D. allergy 12. A. headache B. spread C. health D. weak 13. A. fat B. leaf C. of D. safe 14. A. flu B. sunburn C. junk D. much 15. A. wash B. wear C. wake D. wrap 16. A. sick B. swimming C. itchy D. riding 17. A. really B. healthy C. regularly D. identify 18. A. bad B. tall C. dad D. sad 19. A. although B. enough C. paragraph D. cough 20. A. traditional B. essential C. audition D. picture 21. A. attract B. actor C. guitarist D. gallery 22. A. delicious B. special C. musical D. physician 23. A. answer B. further C. butter D. birth 24. A. burn B. collect C. alone D. neighbour 25. A. chimpanzee B. mechanic C. chemistry D. earache 26. A. of B. funny C. wife D. bookshelf 27. A. conquer B. cook C. centimeter D. key 28. A. pork B. support C. perform D. information 29. A. tuna B. tutor C. tofu D. unusual 30. A. purity B. burning C. cure D. durable

Ai giúp mik vs 1. More tourists would come to our country if we (provide) ______________ better services. 2. If I studies abroad, _____________ (we/keep) in touch with each other? 3. If someone (give) ______________ you a camera, what would you do with it? 4. If I (win) _________________ a big prize in a lottery, I (donate) _______________ apart of it and (spend) _______________ the rest for myself. 5. What ___________ (you/do) if you found a wallet in the street? 6. I could watch foreign TV program without subtitles if I (know) _________ English. 7. He might be obese if he (not stop) __________________ taking in fat and sugar. 8. If he knew that it was dangerous, he (not do) _______________ it. 9. If you (see) ________________ someone drowning, ________________ (you/save) him? 10. She (be) __________________ happier if her parents (not get) ________________ divorced. 11. If you (sleep) _____________ under a mosquito net you (not be) _______________ bitten so often. 12. I (get) _________________ a job easily if I (have) ______________________ a degree. 13. If whe (have) _________ another hair style, she (look) ___________ younger. 14. if the weather (not be) _______________________ severe, out crops (grow) _______________ faster. 15. I (keep) _____________ a horse if I could afford it.

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