0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
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 come oxygen atoms easily combine with two hydrogen atoms?
Oxygen's high electronegativity draws the weaker electronegativity of hydrogen, so that oxygen's valance shell, needing two electrons to fill it attracts the electrons of two hydrogens.
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.
Can an electon be completely taken away from another atom in a convalent bond?
No, the atoms in a covalent bond are shared between atoms and even when the sharing is not equal, polar covalent bonds, it is still sharing and not electron is pulled into another elements valance shell.
What are the electrons the outermost shell of an electron called?
Valence electrons are the electrons in the outermost shell of an atom. The ones in the inner shell are known as core electrons.
How many atoms in the valence shell of sodium?
There is one electron in sodium's valance shell.
What electron has the greatest binding energy?
The atoms in the valance shell. The atoms furthest from the nucleus. ( ' highest ' )
What does a valence shell have to do with chemical reactions?
The valance shell is important in chemical reactions, as it is the valance electrons which are gained/lost during reactions. An atoms valance electron configuration is what largely determines its chemical reactivity.
The electrons found in an atoms outeer shell are often called electrons?
Valance electrons.
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 atoms are in the valance shell of 17 protons?
7. there is 17 electrons, 2 in the first shell, 8 in the second and 7 in the third
An electron that is found in the outermost shell of an atom and that determines the atoms chemical properties?
This electron is a valance electron.
How is the chemistry performed?
Most chemistry as it is studied is based on the interactions of the valance shell electrons of two or more atoms.
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.
What is the number of electrons in outer shell called?
The number of electrons in the outer shell are called Valence electrons and are important in determining how the atom reacts chemically with other atoms.
Do all carbon atoms have exactly 6 atoms?
No it doesn't, it has four electrons in its valance shell, which is why it has a valance of four, which is to say, it typically forms four bonds. In carbon dioxide, for example, a carbon aton has double bonds with each of two oxygen atoms, hence four bonds in total. In methane, a carbon atom has a single bond with each of four hydrogen atoms, hence four bonds again. There are also two electrons in the inner, or non-valance shell. So, six electrons in total. But only four in the valance shell.
