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Valence shell expansion refers to the phenomenon where elements from the third row and below on the Periodic Table can exceed the octet rule by utilizing d orbitals in addition to s and p orbitals to accommodate more than eight electrons in their valence shell. This allows these elements to form more than the usual number of bonds and have expanded valence shells.
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Why does sulfur have a valency of 4 and 6 when it needs only 2 electrons for stable configuration?
It has 6 electrons in it's valance shell and needs 2 more electrons in it's valance shell to become stable. Some atoms, phosphorous for instance ( valance # 5 ), can reach deeper into their valance shell and make additional covalent bonds.
How many valance electrons in neon?
Eight - it has a full outer shell of electrons.
How many valance electrons are found in an atom what elements Neon?
there are 8 electrons in the valence shell of neon
Why do you think non metals tend to be good at sharing electrons?
All atoms are more stable when their outer most electron shell (valance shell also refered to as a valance orbital but it is slightly different) is full of electrons. Non metals generally have almost full valance shells and it takes less energy to gain a few electrons to reach the stable full outer shell than to lose many electrons to form a stable full outer shell. Take F as an example - it has 7 electrosn in its outermost shell and this shell can fit 8. It will accept 1 electron more easily than losing 7.
How many valance electrons does a neutral atom of silicon have?
That neutral silicon atom has four electrons in its valence shell.
What valance shell does hydrogen belong to?
K shell.
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 the valance shell innermost or outtermost?
outermost
Why does sulfur have a valency of 4 and 6 when it needs only 2 electrons for stable configuration?
It has 6 electrons in it's valance shell and needs 2 more electrons in it's valance shell to become stable. Some atoms, phosphorous for instance ( valance # 5 ), can reach deeper into their valance shell and make additional covalent bonds.
Why is Zn not anoble gas?
It's valance shell does not contain an octet of eight valance electrons. That simple.
Complete valance shell holds electrons?
8
How many electrons does the valance shell in hydrogen have?
1
How many atoms in the valence shell of sodium?
There is one electron in sodium's valance shell.
Does calcium have three electrons in its valence shell yes or no?
No. It has Two electron in its valance shell.
Outer shell electrons are known as?
Valance electrons
What has 5 electrons in its outer shell?
If you are talking about the valance electrons any elements in group 5 on the periodic table will have 5 valance electrons.
Do ions have an unusual number of electrons?
Cations donate electrons from their valance shell, have less, to reach their octet state. Anions accept electrons into their valance shell, have more, to reach their octet state.
