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An element with 120 protons and 2 electrons would belong to Group 2 on the Periodic Table, also known as the alkaline earth metals group. Elements in this group typically have 2 valence electrons and exhibit similar chemical properties due to their electronic configuration. Examples of elements in Group 2 include beryllium, magnesium, calcium, strontium, and barium.

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7mo ago

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What is the element that has 8 electrons and 7 protons?

Any element with 7 protons would be Nitrogen


If element X has 91 protons how many electrons does it have?

If element X has 91 protons, it is element Protactinium (Pa) on the periodic table. In a neutral atom, the number of electrons equals the number of protons, so element X would also have 91 electrons.


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It will have 30 protons and 30 electrons if the atom is neutral.


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If it has 2 protons, it has to be Helium. Helium atom has 2 electrons also, so if it has 3 electrons, it would be He^-


How many electrons does an element have if it has 17 protons and 18 neutrons?

If an element has 17 protons, it will also have 17 electrons since atoms are electrically neutral. Adding the number of neutrons (18) to the number of protons (17) gives us the mass number of the element, which in this case would be 35.


What would you get if you break an element into its smallest particles?

Protons and Electrons


If the nucleus had seventeen protons and nineteen neutrons how many electrons would the atom have?

The number of electrons in an atom is equal to the number of protons in the nucleus, which is 17 in this case. This ensures that the atom is electrically neutral, as the positive charge of the protons is balanced by the negative charge of the electrons.


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51 protons defines the element as antimony (Sb). It normally has 51 electrons, so with 52 electrons, it would be Sb with a 1- charge.


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This would be magnesium, based on the number of protons. Since the protons is equal to the number of electrons it is a neutral atom. Given the number of protons in the atom, the isotope would be magnesium-26.


Can you use the mass number of an element to determine the number of electrons in an atom?

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