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Что происходит в ряду Si-P-S?
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Предмет:
Химия -
Автор:
daciocastillo - 5 лет назад
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Ответы 1
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От Si к S увеличиваются неметаллические свойства, а наоборот уменьшаютсяУвеличивается количество атомов на внешнем электронном уровнеУвеличивается заряд атомного ядра, атомная масса, число протонов и электроновРадиус атомов уменьшается
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Автор:
weaver55 - 5 лет назад
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1. If you want to pass the exam, you'd better ..... some studying.
A) do B) to do C) doing D) done
2. If I knew the answer, I ..... you.
A) will tell B) tell C) would tell D) had told
3. I will send you an e-mail when I ..... back in my country.
A) will be B) am C) have been D) should be
4. By the time we arrived at the station, our train ..... .
A) left B) had left C) had been leaving D) was left
5. It was ..... film that we left before the end.
A) such a boring B) so boring C) the most boring D) a so boring
6. Would you mind ..... the window? It's very hot in there.
A) open B) openign C) to open D) opened
7. David's mother made him ..... his bedroom.
A) to clean B) cleaning C) clean D) cleaned
8. He's not interested ..... politics.
A) for B) of C) with D) in
9. If you don't hurry up, the concert ..... by the time we get there!
A) has started B) had started C) will have started D) would start
10. It's my fault that I failed the exam. I ..... work harder.
A) must have worked harder B) would have worked C) had to work D) should have worked
11. I wish, I ..... to help you, but I can't.
A) can B) could C) were able D) would be able
12. I would have flown business class if I ..... enough money.
A) have B) would have C) was having D) had had
13. She enjoyed her university course ..... it was very difficult.
A) despite B) however C) whereas D) even though
14. He needs to take his car to the garage ..... .
A) to have it repaired B) for repairing it C) to have repaired it D) to be repairing
15. I can't find my glasses. I ..... them in the car.
A) must have left B) should have left C) had to leave D) may leave
16. Do you mind if I smoke? I'd rather you ..... .
A) don't B) won't C) didn't D) wouldn't
17. Where are you from? She asked him ..... .
A) where is he from B) where he was from C) where was he from D) where he is from
18. I'm really looking forward ..... you next week!
A) to see B) to seeing C) to have seen D) to be seeing
19. He drives much ..... than he used to.
A) careful B) more carefully C) carefully D) more careful
20. Why didn't you make him ..... for the damage?
A) paying B) to pay C) pay D) paid
21. He didn't let me ..... the piano.
A) that I could play B) to play C) paying D) play
22. It all depends ..... you.
A) of B) to C) on D) for
23. That house is in a terrible state. You can see it ..... for years.
A) isn't painted B) wasn't painted C) hasn't been painted D) hadn't been painted
24. You didn't tell me she ..... have an operation.
A) will go to B) is going to C) has been going D) was going to
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