Question

Class IX
a. Choose the correct answer:
1. a- particle is:( electron/ doubly charged helium ion)
2. Neutron is discovered by: (Chadwick/ Bohr).
3. 12Mg4, mass number of it is: (12/24).
24
רב​

Answer 1

Answer:

1)doubly charged helium ion

2)Cjadwick

3)24

Explanation:

This' s ur answer....enjoyyy

Answer 2

Answer:

1 = electron

2 = Chadwick

3 = 24

Explanation:

May be it help you