Question

please answer me fast and correct​

Answer 1

Explanation:

Oxygen

the atomic mass of oxygen(Z) is 15 and atomic number(A) is 8

$number \: of \: electrons = z - a$

15-8=7electrons

7protons and

7 neutrons

Aluminium

the atomic mass of aluminium is(Z) 27 and atomic number(A) is 13

$number \: of \: electrons = z - a$

27-13=14 electrons

14 neutrons and

14 protons.

MARK AS BRAINEST

Answer 2

Answer:

Oxygen

the atomic mass of oxygen is 15

atomic number of oxygen  is 8

= 15-8=7electrons

7 protons and  

7 neutrons.

the atomic mass of aluminium is 27

atomic number of aluminium is 13

= 27-13=14 electrons

14 neutrons and  

14 protons.

PLS MARK AS BRAINLIEST