Предмет: Химия, автор: Ритка2008

Назва і кількість протонів у ядрі атома елемента з атомною масою 55​!​

Ответы

Автор ответа: nakannurhan29
1

Ответ:Марганец, 25 электронов и протонов

Объяснение:

Автор ответа: anya22611
0
Атомний номер 55; атомна маса 132,9054. Має один стабільний ізотоп 133Cs. Більшість сполук Cs іонні. Проста речовина — цезій.

nakannurhan29: тут говорят что атомная масса 55 а не номер
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Task 1. Fill in the correct Present Simple form of the verbs in brackets.
This 1)………………………… (be ) Ingrid and she 2) …………………….. (come) from Sweden. She 3) …………………… (live) with her family in a flat in the city of Stockholm. In the winter, it 4) ………………………..(get) dark very early in Sweden and it 5) ……………………………. (snow) a lot. Most people there 6) ………………………… (love) skiing and children 7) …………………………… (learn) to ski at a very young age. In the summer, they 8) …………………………… (ride) bicycles and 9) …….................
(spend) most of the day outdoors. Sweden 10) …………………………… (be) a beautiful country. Ingrid really 11) …………………………….. (enjoy) living there!

Task 2. Fill in the correct Present Continuous form of the verbs in brackets.
1. Gary ………………………… (mow) the lawn.
2. Juan and Maria ………………………….. (eat) a sandwich.
3. I …………………… ( not clean) my room. I …………………… ( play) chess.
4. Kelly …………………… (ride) a horse.
5. I ……………………. (not go ) to the party. I ………………… (stay) in.
6. She ……………………… ( water) the flowers.
7. We………………………. (wash) the car.
8. They ……………………… (have) a dinner party on Saturday.

Task 3. Put the verbs in brackets into correct form of the Present Simple or Present Continuous.
Dear Molly,
I 1)…………………… (write) from the gorgeous island of Jamaica! Jim and I 2)……………
(stay) in a five-star hotel by the sea. Right now, I 3) ………………………..(sit) on the balcony and I 4) ……………………… ( drink) a delicious fruit juice. Jim 5)……………….
(walk) along beach. He 6) ………………………….. (collect) shells and rocks to bring back home.
The weather 7) ……………………(be) hot and sunny. We 8) ………………………… (spend) most of the day relaxing and reading under beautiful palm trees. Tonight, we 9)…………………. (go) to a reggae festival and on Tuesday we 10) …………………… (leave) to Barbados. The Jamaican people 11) ………………………… (make) you feel happy as they 12) ………………………….. (be) cheerful and kind. I 13) ……………………. (love) it here so much that I 14) …………………….. (not/want) to leave!
See you soon,
Cindy