Platinum NEED ANSWERED ASAP

Question

how many electrons are in an ion of your atom after losing or gaining ve-

Answer 1

Assuming you mean when platinum loses or gains electrons, then ...

The most common oxidation states for platinum (Pt) are +2 and +4 (although others are possible).

Pt has an atomic number of 78, meaning it contains 78 protons and 78 electrons, in the neutral state.

To achieve an oxidation state of +2 (Pt²⁺ ion) it must lose 2 electrons, giving it 76 electrons

To achieve an oxidation state of +4 (Pt⁴⁺ ion), it must lose 4 electrons, giving it 74 electrons

Answer 2

Your question is incomplete. To help, realize that the number of electrons in a neutral atom is equivalent to the number of protons. The number of protons is the same as the atomic number of the element. An ion is just a neutral atom that has gained or lost one or more electrons.