Question

3. Why is the nucleus of an atom positively charged​

Answer 1

Answer:

ok

Explanation:

The nucleus has an overall positive charge as it contains the protons. Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral

Answer 2

Answer:

Now, the charge of protons is always positive, the neutrons have no net charge (charge zero) then the total resulting charge of nucleus is positive, due only to the protons contribute. ... It's because of the presence of protons.