This technical assistance paper was developed to clarify specially designed instruction, core instruction and interventions within a multi-tiered system of supports (MTSS) for. educators developing, improving and maintaining systems of support for all students.
The charge of the electron is about -1.60217733 x 10-19 C, the charge of the proton is equal and opposite to that of the electron, both charges are constant.
Electrons reside in orbitals around the nucleus. They have a negative charge (-). It is the number of protons that determines the atomic number, e.g., H = 1. The number of protons in an element is constant (e.g., H=1, Ur=92) but neutron number may vary, so mass number (protons + neutrons) may vary.