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The element with 99 electrons is einsteinium (Es), which has an atomic number of 99. It is a synthetic element that was first discovered as a result of nuclear tests in 1952.

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1y ago

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How many electrons are in the nucleus of einsteinium?

Einsteinium has 99 protons and 99 electrons. Number of neutrons = Atomic mass of an isotope - Atomic number of the element Einsteinium's atomic number is 99 but Es has 19 known isotopes.


How many nuetrons does an einsteinium element have?

99 protons 99 electrons Number of neutrons = Atomic mass of an isotope - Atomic number of the element Einsteinium's atomic number is 99 but Es has 19 known isotopes.Einsteinium has 99 protons.


How many electrons neutrons and protons are in the nucleus of einsteinium?

Einsteinium has 153 neutrons, 99 protons, and 99 electrons. It's atomic mass is 252 and its shells are 2, 8, 18, 32, 29, 8, 2. Its chemical symbol is Es. Einsteinium has 19 isotopes; each isotope has a different number of neutrons.


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The Element Neon has 10 protons and 10 electrons.


What element has a 42 numbers for electrons?

Molybdenum is the element that has 42 electrons.


How many electrons does element oxygen have?

Oxygen is a non metal element. There are 8 electrons in a single atom.


If element X has 72 protons how many electrons does it have electrons?

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Technetium-99 has 43 protons, 56 neutrons and 43 electrons.


What element has eighteen electrons?

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How many electrons does a neutral einsteinium atom have?

Einsteinium has 99 electrons.