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The only neutral atom with two electrons is helium; however, lithium will lose one electron when becoming an ion to have two electrons. Hydrogen can also gain an electron (compounds called hydrides) to have two electrons also.
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∙ 14y ago
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∙ 15y agoHydrogen, when trying to determine the number of electrons there are in a atom reference the atomic number. In this case Hydrogen is number 1 so hydrogen has 1 electron.
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∙ 12y agoThe elements in Group 2 or Group 2A have only two valence electrons.
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∙ 16y agohelium
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∙ 12y agooxygen
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∙ 11y ago2 protons
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Element 3 lithium has one valence electron and element 4 beryllium has two valence electrons Element 5 boron has how many valence electrons?
Boron has 3 valence electrons.Boron has 3 valence electrons.
What element has 2 electron shells and 4 valence electrons?
Two electrons imply that the element is in the second period. The 4 valence electrons says that it is located in group 4A (or group 14 in modern notation). Hence, this element is carbon.The element has 2 electron shells means the element is in the 2nd group. This element is carbon. It has 4 valence electrons.
What are the Every element in group one has one electron in its outer shell Every element in group two has two electrons in its outer shell?
Both statements are true:Every element in group I has one electron in its outer shell andEvery element in group II has two electrons in its outer shell
What is the charge of valence electrons of calcium?
Yes, calcium has valence electrons - two, in fact (it is a divalent chemical element).
How many electrons are in the first shell of beryllium?
Beryllium like every other element excluding hydrogen has 2 electrons in its first shell.
Which element have two protons and two electrons?
Helium
An element that has two outer electrons seeks to gain six more?
An element that has two outer electrons is carbon. Carbon would not use the energy to gain six more electrons when it can easily get rid of the two outer electrons.
Are Isotopes are forms of an element that have the same number of protons but a different number of electrons?
NO. Isotopes are forms of an element that have the same numbers of protons and electrons, but differing numbers of neutrons. For example Helium-3 has two protons, two electrons, and one neutron and Helium-4 has two protons, two electrons, and two neutrons.A form of an element that has a different number of electrons than the number of protons is an "ion".
What element whose valence electrons is full with two electrons on the periodic table?
Helium
This element has two electrons in the 1st sublevel and 4 electrons in the 2nd sublevel?
CARBON
What is the maximum number of electrons an element with two energy levels can have?
8 electrons.
When this element gains 2 electrons it has the electron configuration of the noble gas Argon?
The element is sulfur with 16 electrons. It gains two electrons to form sulfide ion which has 18 electrons as that of argon.
Where do the electrons go for the element neon?
Neon has two energy levels with 2 and 8 electrons in these.
Element 3 lithium has one valence electron and element 4 beryllium has two valence electrons Element 5 boron has how many valence electrons?
Boron has 3 valence electrons.Boron has 3 valence electrons.
Which element has a mass number of 40 and only has 2 valance electrons?
The element that has a mass number of and two valence electrons is an isotope of calcium.
How many valance electrons does helium have?
Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.
What element has 2 electron shells and 4 valence electrons?
Two electrons imply that the element is in the second period. The 4 valence electrons says that it is located in group 4A (or group 14 in modern notation). Hence, this element is carbon.The element has 2 electron shells means the element is in the 2nd group. This element is carbon. It has 4 valence electrons.
