silicon atomic number of protons neutrons and electrons

Platinum-195 is composed of 78 protons, 117 neutrons, and 78 electrons.

Platinum-194 is composed of 78 protons, 116 neutrons, and 78 electrons. Platinum-192 is composed of 78 protons, 114 neutrons, and 78 electrons. Platinum-190 is composed of 78 protons, 112 neutrons, and 78 electrons. 195Pt is the most common isotope, having a natural abundance of approximately 33%. 190Pt is very slightly radioactive, decaying by alpha decay with a half-life of 6.5×10 11 years. Platinum occurs in 6 natural isotopes: 190Pt, 192Pt, 194Pt, 195Pt, 196Pt and 198Pt. Mass numbers of typical isotopes of Platinum are 194, 195, 196, 198. Isotopes are nuclides that have the same atomic number and are therefore the same element, but differ in the number of neutrons. The difference between the neutron number and the atomic number is known as the neutron excess: D = N – Z = A – 2Z.įor stable elements, there is usually a variety of stable isotopes. Neutron number plus atomic number equals atomic mass number: N+Z=A. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10 -19 coulombs. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. Platinum is a chemical element with atomic number 78 which means there are 78 protons in its nucleus.

Silicon atomic number of protons neutrons and electrons