Question

define Octet and Duplet rule .......please define it separately ....... both should be defined properly.......no useless answers .....cause it is very urgent .....who will give the best answer will be marked as brainlist and thanks wil
be given and 5 star rating.....useless answers will be reported ......please give the answer quickly ....... define it separately​

Answer 1

Answer:

DUPLET RULE: The tendency of an atom to acquire an outer most shell of two electrons is called duplet rule. OCTET RULE: The tendency of an atom to acquire an outermost shell of eight electrons is called the octet rule. Show more.

word octet refers to the number eight, and the word duplet is related to “doublet” and refers to a pair or to the number two.

Noble gases (or inert gases) such as and have eight electrons in their valence (outermost) shells, which gives them a stable electronic configuration. Other atoms have a tendency to combine in order to have [math]8[/math] electrons in their valence shells, and to arrive at the same electronic configuration as a noble gas. This is the octet rule.

However there are elements like lithium and hydrogen that do not reach eight electrons in their outermost valence shell. The outermost shell of helium for example is filled with only two electrons. Hydrogen and lithium become stable by acquiring the electronic configuration of the nearest inert gas, which is helium. This is the duplet (or duet) rule.

Here are additional clarifications:

The octet rule is a that reflects observation that of tend to combine in such a way that each atom has eight in its , giving it the same as a . The rule is especially applicable to , , , and the , but also to metals such as or . […]

Other rules:

The duet rule of the first shell—the noble gas has two electrons in its outer shell, which is very stable. (Since there is no 1p subshell, 1s is followed immediately by 2s, and thus shell 1 can only have at most 2 valence electrons). only needs one additional electron to attain this stable configuration, while needs to lose one.

Octet rule is for there to be 8 electrons in the valence shell.

Duplet is 2 electrons in valence shell structure.

These are the stable electronic configurations resembling that of noble gases.

The key difference between octet and duplet is that octet is an atom or an ion having a maximum of eight electrons in the outermost shell while duplet is an atom having the maximum of two electrons in the outermost shell.

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Answer 2

$\Huge\bold{\underline{\underline{\purple{ Octet Rule}}}}$

The octet rule is a chemical rule of thumb that reflects the observation that main group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.

$\Huge\bold{\underline{\underline{\green{ Duplet Rule}}}}$

Duplet rule states that some elements can be stable with two electrons in their shell. Hydrogen and helium are special cases that do not follow the octet rule but the duplet rule. They contain an s s s orbital but no p p p orbitals.

$\Huge\bold{\underline{\red{ Difference?}}}$

The key difference between octet and duplet is that octet is an atom or an ion having a maximum of eight electrons in the outermost shell while duplet is an atom having the maximum of two electrons in the outermost shell.

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