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How many electrons are in an atom if the atomic number is 28?

The number of electrons in an electrically-neutral atom is the same as the number of protons in the nucleus. Therefore, the number of electrons in neutral atom of Nickel is 28.

How many protons neutrons and electrons are there if nickel has an atomic number of 28 a mass number of 58 and a charge of 2?

Ni-58 has an atomic number of 28 and a mass number of 58. Therefore, Ni-58 will have 28 protons, 28 electrons, and 58-28, or 30, neutrons.In Ni-60 2+ species, the number of protons is same as in neutral Ni-58.

How many neutrons does nickel 28 have?

30 neutrons

What is the number of electron of nickel?


Does nickel have 2 valence electrons?

Outermost shell of Ni is 4th shell i.e N shell. Therefore Ni has 2 valence electrons.

What is the atomic mass of nickel?

58.6934 u

How do elements get their atomic number?

Neutral atoms of each element contain an equal number of protons and electrons. The number of protons determines an element’s atomic number and is used to distinguish one element from another. Together, the number of protons and the number of neutrons determine an element’s mass number.

Why is proton so named?

The word proton is Greek for “first”, and this name was given to the hydrogen nucleus by Ernest Rutherford in 1920. In previous years, Rutherford had discovered that the hydrogen nucleus (known to be the lightest nucleus) could be extracted from the nuclei of nitrogen by atomic collisions.

How did Goldstein discover the proton?

Discovery of the Proton In 1886, Eugene Goldstein (1850-1930) discovered evidence for the existence of this positively charged particle. Using a cathode ray tube with holes in the cathode, he noticed that there were rays traveling in the opposite direction from the cathode rays.

Did Goldstein discovered Proton?

Discovery of the Proton In 1886 Eugene Goldstein (1850–1930) discovered evidence for the existence of this positively charged particle. He called these canal rays and showed that they were composed of positively charged particles. The proton is the positively charged subatomic particle present in all atoms.

What did E Goldstein discover?

He was primarily interested in electrical discharges in moderate to high vacuums. In 1886 he discovered what he termed Kanalstrahlen, or canal rays, also called positive rays; these are positively charged ions that are accelerated toward and through a perforated cathode in an evacuated tube.

Who first discovered Proton?

Ernest Rutherford’s

Who found electron proton and neutron?

Discovery of Electrons, Protons and Neutrons

Discoverer Year of Discovery
Proton E. Rutherford 1909
Neutron James Chadwick 1932
Electron J.J. Thomson 1897

Where is the proton located?