Question

please answer quickly ​

Answer 1

Answer:

Atoms are the fundamental building blocks of all matter and are composed of protons, neutrons, and electrons. Because atoms are electrically neutral, the number of positively charged protons must be equal to the number of negatively charged electrons. Since neutrons do not affect the charge, the number of neutrons is not dependent on the number of protons and will vary even among atoms of the same element.

Answer 2

1)Atomic number - the number of protons that a chemical element has in its centre (nucleus).

Mass number - the total number of protons and neutrons in an atom.

2) i think the question is wrong im not able to do it