General Knowledge - Chemistry - Discussion
Discussion Forum : Chemistry - Section 1 (Q.No. 5)
5.
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
Discussion:
31 comments Page 3 of 4.
Clint said:
1 decade ago
The question should be stated like this:
"The number of d-electrons in Fe2+ (Z = 26) is equal to that of"
The word "not" should be omitted.
"The number of d-electrons in Fe2+ (Z = 26) is equal to that of"
The word "not" should be omitted.
Santhoshi sravya said:
1 decade ago
How can you say that cl is having ne[10] and it is unstable configuration.
Valli said:
1 decade ago
The question should be Fe+2 d electrons are equal to that of so that the answer is D.
Srinivas said:
1 decade ago
Fe 2+ has 6 electrons in d -orbital ,but Cl has 11-electrons in p- orbital
Kofi said:
1 decade ago
Because number of d electrons are the same as the number of p electrons in the p- orbital.
Gopalakrishnan said:
1 decade ago
In this case, Fe(26)is 1s2,2s2,2p6,3s2,3p6,3d6,4s2...
in Fe2+ is 1s2,2s2,2p6,3s2,3p6,3d5,4s1...because of half-filled configuration is stable... in Ne,Mg,Fe these are elements having full filled configuration and stable configuration.... Cl only having Ne(10) 3s2,3p5..its a unstable configuration...
in Fe2+ is 1s2,2s2,2p6,3s2,3p6,3d5,4s1...because of half-filled configuration is stable... in Ne,Mg,Fe these are elements having full filled configuration and stable configuration.... Cl only having Ne(10) 3s2,3p5..its a unstable configuration...
Dipali said:
1 decade ago
In case of Fe(Z=26):[Ar]18,3d6,4s2. here is 6 ele.in d-orbital.
Fe+2 two ele. will be lose, so Fe+2:[Ar]18,3d5,4s1.one ele is lost from 4s and one ele. is from 3d orbital it is bcoz if the d-orbital is half filled or fully filled atom will gain more stability.so here is 5 ele in d orbital.
Cl(Z=17): 1s2,2s2,2p6,3s2,3p5.here 5 ele. in p-orbital.
Mg(Z=12): 1s2,2s2,2p6,3s2.here 2 ele.in s-orbital.
Fe+2 two ele. will be lose, so Fe+2:[Ar]18,3d5,4s1.one ele is lost from 4s and one ele. is from 3d orbital it is bcoz if the d-orbital is half filled or fully filled atom will gain more stability.so here is 5 ele in d orbital.
Cl(Z=17): 1s2,2s2,2p6,3s2,3p5.here 5 ele. in p-orbital.
Mg(Z=12): 1s2,2s2,2p6,3s2.here 2 ele.in s-orbital.
Deepa335 said:
1 decade ago
Actually in d block elements on oxidation d block elements loose electrons first from s orbitals of the outer shell so Fe 2+ will have conf as 4s0 3d6 therefore the answer to the question will b both option A and B
Auchithya said:
1 decade ago
Because if we write firstly the configuration of Fe we get 6 electrons in d-orbital of Fe, but in the question Fe2+is given so we should take of two electrons in the d-orbital of Fe, then we will remain with only 4electrons in d-orbital of Fe. Now if we see options cl will get 4electons in p-orbital.
Balakishan said:
1 decade ago
No.of d electrons Fe+2 6(3d6)
no.of p electrons in Ne is 6(2p6),
no.of s electrons in Mg is 6(1s2,2s2,3s2)
no.of d electrons in Fe is 6 (d6)
no.of p electrons in Ci is 11(2p6,3p5)
no.of p electrons in Ne is 6(2p6),
no.of s electrons in Mg is 6(1s2,2s2,3s2)
no.of d electrons in Fe is 6 (d6)
no.of p electrons in Ci is 11(2p6,3p5)
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