Question

pls answer this pls pls​

Answer 1

Answer:

I do not know sorry .........

Answer 2

Answer:

Answers are given below

Explanation:

1) the 2 subatomic particles with similar mass are Protons and Neutrons .

2) The atomic number of an atom always equal to the number of proton and the number of proton is equal to the number of electrons

3) A - Z = Number of Integers . ( I am not sure about this answer )

4) The combining capacity of an element is called as its valency.

5) In ammonia the valency of N with respect to H is 3