Respuesta :
Answer:
A. Uranium
Explanation:
Uranium - 92e-
Sodium - 11e-
Selenium - 34e-
Polonium - 84e-
Answer : The uranium element has the greatest number of electrons.
Explanation:
Atomic number : It is defined as the number of protons or number of electrons.
Atomic number = Number of protons = Number of electrons
Mass number : It is defined as the sum of number of protons and number of neutrons.
Number of neutrons = Mass number - Number of protons
The given element is, Uranium
Atomic number of Uranium = 92
Atomic number = Number of protons = Number of electrons
So, Atomic number = Number of electrons = 92
The given element is, Sodium
Atomic number of Sodium = 11
Atomic number = Number of protons = Number of electrons
So, Atomic number = Number of electrons = 11
The given element is, Selenium
Atomic number of Selenium = 34
Atomic number = Number of protons = Number of electrons
So, Atomic number = Number of electrons = 34
The given element is, Polonium
Atomic number of Polonium = 84
Atomic number = Number of protons = Number of electrons
So, Atomic number = Number of electrons = 84
Hence, from this we conclude that uranium element has the greatest number of electrons.
