Question

chemistry 1. rays formed by fast moving electrons . 2.atomic no. is equal to total no. of. 3. sub atomic particles having no charge. 4. method by which cancerous cells are burnt and destroyed .

Answer 1

1 cathode
2 protons
3 neutrons
4 chemotherapy

Answer 2

1. rays formed by fast moving electrons .cathode ray

2.atomic no. is equal to total no. of. Proton / electron

3. sub atomic particles having no charge. Neutron

4. method by which cancerous cells are burnt and destroyed . radiotherapy/ chemotherapy

Explanation:

• the cathode ray is formed due to the movement of fast moving electron. It is mainly used in the electron gun of the television set. In addition to this the atom consists of the protons electrons and neutrons.

• The number of proton is equal to the number of electrons which is the  atomic number of the the particular element. The neutron has no charge. radiotherapy emits Gamma radiation which helps in the Killing of the self and stubborn the other and chemotherapy prevents the the growth and destruction of the cancerous cell.

To know more about radiotherapy,

The noble gas used in radiotherapy is (a) neon (b) argon (c) radon ..

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