Question

completed the following.
(no unwanted answer please) ​

Answer 1

Answer:

1)19, 9,9,---potasium

2)32,16,16,---oxygen

3)12,12,12--- carbon

4)1,1,1---helium

5)1--- Hydrogen

Explanation:

i hope u will understand

mark me as the brainliest please

Answer 2

Explanation:

9 - 19 - 10 - 9 - 9 - Flourine

16 - 32 - 16 - 16 - 16 - Sulphur

12 - 24 - 12 - 12 - 12 - Magnesium

1 - 2 - 1 - 1 - 1 - Deuterium ( hydrogen)

1 - 1 - 0 - 1 - 1 - Hydrogen

remember this:

atomic number = no. of electrons = no. of protons

mass number = protons + neutrons

byheart elements from 1 to 20

it's enough for lower classes

mark this brainliest if u understood

and he marked the other ans which is wrong as brainliest..wtf