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The 18 electron rule (also known as the Effective Atomic Number Rule or EAN rule) was originally proposed by N.V. Sigwick when extending the octet rule proposed by G.N. Lewis in applying it to organometallic compounds. The idea behind both of these rules is that in a compound the sum total of all of the electrons would have the configuration of a noble gas.
With the octet rule there is the basic assumption that the central atom in the compound is 8 (the maximum capacity of the s and p orbitals). The 18 electron rule is based on a similar idea as the octet rule, however it takes into consideration the d orbital too - 2 (s) + 6 (p) + 10 (d) = 18.
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How many electrons does pph3 give in the calculation of valence electron counts in the 18 electron rule?
2 electrons
Discuss the nature of Bonding in Metal Carbonyls?
the transion metal from carbonyals 18 electron rule
What is the number of electron is cl- ion?
18
What is octet rule explain using example?
The octet rule is when an atom/element has a complete valence electron shell. Group 18 (the noble gases) always follows the octet rule, and sometimes certain ions of elements can follow the octet rule.
Give the electrical charge of electron?
The electrical charge of the electron is negative. Proton is positive Neutron is neutral Electron is negative
What is the rule for electron orbit or shell?
Electron shells fill in the order 2, 8, 18, 18, 32, 32
How many electrons does pph3 give in the calculation of valence electron counts in the 18 electron rule?
2 electrons
Why does some valence shells have eighteen electrons and some only eight?
Octet rule and 18-electron rule.
Discuss the nature of Bonding in Metal Carbonyls?
the transion metal from carbonyals 18 electron rule
What is silver's electron pattern?
Silver's electron configuration is 2, 8, 18, 18, 1.
Why is group 18 important?
Group 18 (the noble gases) are completely made of special gases. They have a complete valence electron shell is the mainest reason they are important. They are actually not able to combine with any other element because they satisfy the octet rule (having a complete valence electron shell).
What is th charge of an electron?
The charge of an electron is .16 E-18 Coulombs.
Sodium has one electron in its outer shell According to the octet rule?
I think it wants to give up an electron
What is the number of electron is cl- ion?
18
How many electron orbital shells does francium have?
Francium has seven electron shells; electrons per shell: 2, 8, 18, 32, 18, 8, 1.
What rule states that atoms react so as to acquire the stable electron structure of a noble gas?
octet rule
What is the pattern rule for 18-36-54-72-90-108?
rule: add 18 to each number, starting with 18.
