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How many electrons are in the outer energy level of a helium atom?
Helium and hydrogen and group 3 to 12 got 2 valence electron
Why is helium on the right side instead of being next to helium?
Because it's a noble gas like all the ones under it it doesn't need any valence electrons its a stable element
Helium atoms only need how many valence electrons to have a filled outermost energy level?
Helium is already full. Helium atoms only need 2 electrons to be full, and Helium, as an element, already has 2.
Which electrons in the first period have higher ionization energies?
In the first period, the ionization energy increases from left to right across the period. Therefore, the electrons on the right side of the first period (e.g., helium, neon) have higher ionization energies compared to the electrons on the left side (e.g., hydrogen, lithium).
How many electron are required for water to complete its octet structure?
Water is a molecule made of three atoms (one oxygen and two hydrogen) and the concept of the electron octet applies to atoms, not to molecules. Oxygen, with six valance electrons, can acquire an octet by sharing the electrons of two hydrogen atoms, each of which have one electron. So the water molecule is self contained, it does not need any more electrons.
Why does helium atom need only two valance electrons?
because it only has one orbital
Is it true that the octet rule acquires the valence electrons total?
Yes that is true for the first 20 elements, except helium and hydrogen which needs 2 valance electrons to be complete. After 20, things change, but we don't need to worry about it at the basic level.
How many additional valance electrons does fluorine need to have a valance shell?
1
Which atom does not need 8 electrons in it outer energy level to be stable?
hydrogen, helium, lithium, and beryllium
How many valance electrons do most elements need to have a stable electron configuration?
8 valance electron
How many electrons are in the outer energy level of a helium atom?
Helium and hydrogen and group 3 to 12 got 2 valence electron
What makes a group not reactive on the periodic table?
A full octet, valance shell. A valance shell with eight electrons, such as the Nobel gases have, doe not need to donate or accept electrons into or out of the valance shell to be stable.
Is argon a reactive element?
Not really. Argon is a Nobel gas with a full valance octet; 8 valance electrons that do not need to accept or donate electrons to be '' happy. ''
Why is helium on the right side instead of being next to helium?
Because it's a noble gas like all the ones under it it doesn't need any valence electrons its a stable element
What two atoms will have their outer energy level filled with two electrons?
Hydrogen and Helium both only need two valence electrons to fill their outer shell.
Does helium have a complete outer shell?
Not by itself, no (that is, hydrogen is not a noble gas). A neutral hydrogen atom starts out with 1 electron, but it needs 2 electrons to fill its shell. Therefore, a hydrogen atom will often form 1 covalent bond with another atom, in order to gain that 1 extra electron it needs to fill its shell. Important note: Most elements need 8 electrons to get a full shell, but hydrogen is the exception: it only needs 2 electrons to get a full shell.
Helium atoms only need how many valence electrons to have a filled outermost energy level?
Helium is already full. Helium atoms only need 2 electrons to be full, and Helium, as an element, already has 2.
