Question

Q-35 i) write four feature of Bohr s model of an atom. ii) Make a schematic for atomic structure of magnesium and phosphorus. iii) write uses of co-60 and U-235.​

Answer 1

Answer:

(i) The Bohr model has the following features:

1) There is a nucleus  

2) The electrons move about the nucleus in "stationary states" which are stable, that is, NOT radiating energy

3) The energy of orbit closest to the nucleus is lowest and farthest away is highest.

4) Each line in a spectrum is produced when an electron moves from one stationary state to another.

(ii)

*Given as attachment*

(iii)

Co-60 is a radioactive isotope that is used in cancer treatment to destroy malignant cells. It's also used to treat brain tumors without surgery. It is a member of the Cobalt family of elements. Nuclear reactors use U-235 as a fuel. Uranium is the part that it belongs with.