What is the charge of an atom that has lost one or more electrons?

When an atom loses one or more electrons, it becomes positively charged. This occurs because electrons carry a negative charge, and their removal leaves the atom with more protons than electrons. Since protons are positively charged, the overall charge of the atom shifts to a positive state.

In a neutral atom, the number of protons equals the number of electrons, balancing the charges. However, when electrons are lost, this balance is disrupted, resulting in a net positive charge. This positively charged ion is referred to as a cation.

Maintaining clarity on these concepts is essential, as knowing the behavior of atoms in relation to their electrons underpins much of atomic and molecular chemistry. The correct understanding of charges helps in predicting how different elements will interact in chemical reactions.