Ядра изотопа 23290Th претерпевают α-распад, два β-распада и еще один α-распад. Какие ядра получаются после этого?

1.there are… four rooms in my flat.
2.thare are… three pictures on the wall.
3.there is… a car in the garage.
4.there are… many flowers in the garden.
5.there is… a sandwich on the table.
6.…there are buses in the street.
7.there are… seven ladies in the picture.
8.there are… ten dresses in the wardrobe.
9.there is… a monkey in the Zoo.
10.…there are interesting stories in this book.

1.there are
2.there are

3.there is

4.there are

5.there is    6.there are

7there are 

8.there are

9.there is

10.there are