Предмет: Физика, автор: yaroslav5836

Назовите химический элемент ,в ядре которого содержится 88 протонов и 136 нейтронов

Ответы

Автор ответа: drak0sha881

Радий 224 - содержит 88 протонов и 136 нейтронов. Принадлежит к радиоктивному семейству тория-232

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Английский язык, автор: musalaevanuriat

i (write) to them three times

2 года назад

Предмет: Английский язык, автор: lic2000

6. Underline the correct item.
Our house can't/may be haunted; we've lived here for years and we've never seen or heard anything unusual going on.
The style of that painting must/may be Cubism, because the artist has used square and rectangular shapes.
It can't/may be a coincidence, but isn't it strange that I was thinking about John at the exact moment he called me?
Susan may/must be at the photographic exhibition, but I'm not sure.
The magician's assistant hasn't truly disappeared; our eyes may/must be playing tricks on us!
You may not/can't have seen a ghost. They're not real!
7. Read the text and match the phrases (A-F) to the gaps (41-45). There is one extra phrase.
Nature’s joke? - the strange and wonderful PLATYPUS
The platypus is a strange little creature found only in Australia. When the first platypus was sent to Europe in the 19th century, the scientists who examined it just could not believe their eyes. They believed the platypus was a joke, 41) ....... .They thought some fun-loving Australian had put the feet and nose of a duck onto the body of a rat, 42)……..
But platypuses are real, 43) ............... . Platypuses have a nose like a duck, webbed feet like a duck, soft brown fur on their body and a long, flat tail like a beaver. As if that weren't strange enough, even though they are mammals (which means they feed their babies milk), platypuses don't give birth to live babies 44) ...............! No wonder scientists couldn't decide for a very long time if platypuses were birds, reptiles or mammals.
But the platypus has even more wonderful characteristics. Platypuses find their food in rivers by using electric fields. And, if they are in danger, male platypuses have sharp hooks on their feet 45) ............... .It's no surprise then, that this special, shy little animal is one of Australia's most famous creatures. A picture of the platypus appears on the Australian 20 cent coin. Australians are very proud of their unique platypus.
A just to play a trick on them
B that produce poison strong enough to kill a dog
C which makes them part-reptile, part-mammal, part-bird
D but instead lay eggs just like birds
E and there is no other creature like them on Earth
F because of its extremely strange appearance

2 года назад

Предмет: Қазақ тiлi, автор: Аноним

Запишите множество целых чисел расположенных между данными числами : 1) -9 и -2; 2) -6 и 0; 3) -5 и 3; 4) -3 и 3; СРОЧНО Даю 100 баллов

2 года назад

Предмет: Математика, автор: sophiealexandrova

пароход проходит некоторое расстояние по течению за 10 часов
а против течения за 20 часов
За какое время проплывет это расстояние плот?

7 лет назад

Предмет: Литература, автор: margarert

Помогите, пожалуйста, "жизнь Ивана Семёнова, второклассника и второгодника"(читательское мнение).
Заранее спасибо!

7 лет назад