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Helium is unreactive as it has a completely filled outer (valence) shell. Its electronic configuration is 1s2. The ouer shell of the next heaviest noble gas neon is also full, and its electronic configuration is 1s2 2s22p6. However the heavier elements in the group Argon, Krypton, Xenon have the same ns2 , np6 octet as Neon which imparts considerable stability but means that the outer valence shell is not complete and as a consequence these elements have compounds, albeit highly reactive ones.
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How many electrons would hydrogen need to have a full outer she?
Hydrogen has one electron in its outer shell and typically needs one more electron to achieve a full outer shell, which would complete its valence shell with two electrons (like helium). Therefore, hydrogen would need one additional electron to have a full outer shell.
Is the element helium an electron donor or acceptor?
It is neither. Helium is a noble gas, which means its valence electron shell is filled, making the atoms stable and unreactive. However, under extremely high pressures, helium can react with sodium, but it would never happen naturally.
What does calcium not bond with?
I would imagine, logically, Calcium would react with every element except the Noble Gases - as they already have full outer energy levels, thus being unreactive. You will often find one calcium reacting with one element from group 6, for example Oxygen. CaO (as they strive to reach a full outer shell.)
What element would have a full valence shell on the periodic table?
The noble gases helium and neon are the only elements with completely full outer shells.
Why helium does not form ion easily?
it is a noble gas and is averse to losing its electrons from the outer shell of its atom and in which case it would become electrically charged
What type of bond would likely form with Helium and Helium atoms?
No bond at all, He has a complete outer shell
How many electrons would hydrogen need to have a full outer she?
Hydrogen has one electron in its outer shell and typically needs one more electron to achieve a full outer shell, which would complete its valence shell with two electrons (like helium). Therefore, hydrogen would need one additional electron to have a full outer shell.
Is the element helium an electron donor or acceptor?
It is neither. Helium is a noble gas, which means its valence electron shell is filled, making the atoms stable and unreactive. However, under extremely high pressures, helium can react with sodium, but it would never happen naturally.
What does calcium not bond with?
I would imagine, logically, Calcium would react with every element except the Noble Gases - as they already have full outer energy levels, thus being unreactive. You will often find one calcium reacting with one element from group 6, for example Oxygen. CaO (as they strive to reach a full outer shell.)
What element would have a full valence shell on the periodic table?
The noble gases helium and neon are the only elements with completely full outer shells.
Why helium does not form ion easily?
it is a noble gas and is averse to losing its electrons from the outer shell of its atom and in which case it would become electrically charged
Where or the periodic table would you find elements that will not react with other elements?
Elements that generally do not react with other elements are found in the noble gases group on the far right of the periodic table, such as helium, neon, argon, krypton, xenon, and radon. These elements have a full outer electron shell, making them stable and unreactive.
Why it would be coreect to say that helium has chemical properties?
But of course. One of its properties is that it is very unreactive.
What is an example of an unreactive element?
Basically all the noble gases as they have a stable electronic configuration and therefore they would not share their electrons with other atoms. -- Actually, the noble gases have been synthesized in labs to form noble gas compounds. Gold and platinum are both unreactive elements. There are probably more though.
Which would be least reactive because its last electron shell is full with 2 electrons 1.helium 2.neon 3.lithium 4 bromine?
Helium would be least reactive because its last electron shell is full with 2 electrons, giving it a stable electron configuration. Neon also has a full outer electron shell but belongs to the noble gases group. Helium is a noble gas, hence more stable and less reactive compared to lithium and bromine.
How many electrons does an atom have to have in the outer shell to not form chemical bonds?
An atom would need to have a full outer shell with 8 electrons (or 2 electrons for helium) to be stable and not form chemical bonds. This is known as the octet rule, where atoms tend to gain, lose, or share electrons to achieve a full outer shell.
Does calcium have a full outer shell?
Calcium has a full 4s sublevel, but does not have a full "outer shell", per se, because it is not a noble gas.
