Table of Contents
How many valence electrons does a stable have?
8 valence electrons
Atoms tend to form bonds so that they have 8 valence electrons and become more stable.
How many valence is stable?
eight electrons
The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.
How many valence electrons make an element stable or happy?
Expert Answers A full and stable outer shell of an electron consists of eight electrons. In chemistry, this is called the “octet rule”. An atom will look to chemically combine with another atom to form a compound or a molecule if it has less than eight electrons.
Which element is stable with two valence electrons?
Helium
Helium (He) is similar in that it, too, only has room for two electrons in its only valence shell. Hydrogen and helium have only one electron shell. The first shell has only one s orbital and no p orbital, so it holds only two electrons. Therefore, these elements are most stable when they have two electrons.
How many valence electrons do H and he need to be stable?
octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.
Why is 2 and 8 considered stable?
The octet rule refers to the tendency of atoms to prefer to have two and eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.
How many electrons does be need to be stable?
Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule.
Why are atoms with 8 valence electrons so stable?
In chemistry, 8 isn’t a lucky number, per se, but, a number that indicates stability. The rule of 8 or the Octet rule is the tendency of atoms to have eight electrons in their valence shell. Eight electrons in this final shell allow atoms to be stable and non-reactive.
Can a atom with 4 valence electrons go either way?
•For atoms with 4 valence electrons, it can go either way. •For atoms with 8 valence electrons, there is no change. Example •I need to know what ion Aluminum forms.
What are the names of the valence electrons?
Element Symbol Element Name Element Element Valence Electrons 1: H: Hydrogen: 1 H – Hydrogen: 1s1 2: He: Helium: 2 He – Helium: 1s2 3: Li: Lithium: 3 Li – Lithium: 2s1 4: Be: Beryllium
Why do noble elements have the right number of electrons?
Every shell is complete, each orbital is filled with the right number of electrons, and as a result, noble elements are very stable. There is no chance of another molecule interacting with them, as they don’t have anything to offer.