If an object has extra electrons, it will surely have negative charge.
The bond present in HCl is a polar covalent bond. This bond is formed by the sharing of electrons between the hydrogen atom and the chlorine atom, but the electrons are more strongly attracted toward the chlorine atom, giving it a partial negative charge and the hydrogen atom a partial positive charge.
Since protons have a positive charge and electrons have a negative charge, an atom with more protons than electrons would have a positive charge. Note that an atom with this kind of imbalance is known as an ion.
HBr forms a polar covalent bond, where the hydrogen atom has a partial positive charge and the bromine atom has a partial negative charge due to differences in electronegativity. This results in an uneven sharing of electrons.
The oxygen atom in a polar water molecule carries a partial negative charge. This is because oxygen is more electronegative than hydrogen, leading to an unequal sharing of electrons in the covalent bonds.
A negative charge that exists because of a covalent bond with hydrogen
Negative
negative
negative
This atom become a cation (positive).
Neutral or no charge.
The oxygen atom is neutral.
Hydrogen has a positive charge.
An atom that has the same amount of protons and electrons has no net charge and therefore is neutral.
Oxygen -2 Hydrogen +1
a partially negative charge.
positive
The sodium cation is positive (+1).