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Because it has an Atomic Mass of only 1.
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What is a stable octet mean?
a stable octet is also known as a full outer shell. it occurs when electrons are added or removed from an atom so the outtermost shell contains its maximum amount, funnily enough Helium is included because is has a full outer shell as opposed to the direct meaning of a full octet. the term full octet refers to the outtermost shell being complete, however a direct definition means the outtermost shell containing EIGHT electrons, which simply isn't possible for something like Helium or Hydrogen. in which case, the full octet of either Helium or Hydrogen is two electrons- this would give Helium no charge at all, but would give Hydrogen a -1 charge, in a diatomic molecule two Hydrogen atoms would share their electrons between them: H=H <--Hydrogen / Helium --> He (would not donate or adopt electrons) more interstingly is the FORMS of Hydrogen. there are three: Hydrogen, deuterium and tritium.
Why doesn't helium follow the "drop the one" rule?
Helium does not follow the "drop the one" rule because it has a full outer electron shell with two electrons, making it stable and not needing to lose or gain electrons to achieve a stable configuration.
Is NH3 a resonance structure?
No, NH3 is not a resonance structure. Resonance occurs when it is possible to draw multiple valid Lewis structures for a molecule, but for NH3, there is only one correct Lewis structure based on the arrangement of the atoms and the octet rule.
Why do atoms share or transfer electrons?
The number of electrons atoms donate or accept or share has to do with the octet rule. The octet rule is a rule of thumb that reflectfalses thethis is not ture increase stability of an atom when it has a complete valence shell (which is usually 8 valence electrons). Therefore, if an electron has one less electron than is necessary to complete its outer valence shell, it will accept an extra electron. The halides, such as fluorine, chlorine, bromine and iodine are all missing one electron to reach a stable octet (the noble gas configuration), and all accept one electron. The alkali metals, such as lithium, sodium, potassium and rubidium all lose one electron because they have one more electron than the noble gas configuration.See the Related Questions for more information about counting valence electrons and the octet rule.
How can one detect and safely extinguish an invisible hydrogen fire?
To detect and safely extinguish an invisible hydrogen fire, specialized hydrogen detectors can be used to identify the presence of hydrogen gas. In the event of a fire, it is important to use Class D fire extinguishers specifically designed for flammable metals like hydrogen. These extinguishers contain materials such as sodium chloride or graphite powder that can safely smother the fire without causing a reaction. It is crucial to follow proper safety protocols and seek assistance from trained professionals when dealing with hydrogen fires.
Which one doesn't follow the octet rule nh3 cf4 bcl3 ash3 hcl?
Boron trichloride does not follow the octet rule. Boron does not allow the eight required electrons in the outer shell.
Which of the atoms don't always obey the octet rule H O Br?
Hydrogen is the atom that doesn't always obey the octet rule. It only needs 2 electrons to have a full outer shell, rather than the 8 electrons typically required by the octet rule. Oxygen and bromine usually follow the octet rule.
A molecule with bonding that follow the octet rule?
An example of a molecule that follows the octet rule is methane (CH4). In methane, carbon forms four covalent bonds with hydrogen, allowing each atom to achieve a full outer shell of electrons (octet) and satisfy the octet rule.
In which bonding patterns does X obey the octet rule?
no it does not follow octet rule
What rule do the nonmetal atoms follow?
octet rule
Does H2S follow the octet rule?
H2S does follow the octet rule. When you draw the Lewis Structure for H2S, it looks like this: If you count up the lone pairs and sigma bonds (each worth 2), there are 8, thus, H2S follows the octet rule.
Is water an exception to the octet rule?
It is one of many, many exceptions to the octet rule. Hydrogen does NOT require 8 electrons.
What is the octet rule in terms of lewis structures?
Octet rule states that each electron wants to complete its octet ( 8 electrons in the outermost shell) or a duplet (in case of hydrogen and helium).
Does BCl3 follow the octet rule?
No, BCl3 does not follow the octet rule as boron only has 6 valence electrons in this molecule. Boron can form stable compounds with less than an octet due to its electron deficiency.
Is NH3 an exception to the octet rule?
NH3 is not an exception to the octet rule. Nitrogen (N) in NH3 has a total of 8 valence electrons (5 from nitrogen and 3 from hydrogen), fulfilling the octet rule. Nitrogen has 3 bonded pairs and 1 lone pair of electrons, following the octet rule.
How does oxygen not follow the octet rule?
Oxygen can violate the octet rule because it can form stable compounds with less than eight electrons in its valence shell. For example, in molecules like hydrogen peroxide or ozone, oxygen can have six electrons in its valence shell. This is possible due to oxygen's ability to form multiple bonds and accommodate more than eight electrons in its valence shell.
Why would a hydrogen attach to chlorine?
Hydrogen has one valence electron. To form a compound, it must follow the octet rule, which states that the total outermost orbital (valence) contains eight electrons. The Chlorine atom contains seven valence electrons. H(1) + Cl(7) = 8 (follows the octet rule)
