The nucleus of an atom is positively charged​

It's because of the presence of protons.

Explanation:

A nucleus of an atom has protons and neutrons. We know that a proton has a charge of

+

1

, while a neutron has no charge, or

0

. Therefore, the nucleus of an atom will always have a positive charge.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

the ratio of the conjugate base to the acid required to attain the desired ph.