help...please help i know it\'s alot.... For each of the following transition me
ID: 947213 • Letter: H
Question
help...please help i know it's alot....
For each of the following transition metal complexes, determine the oxidation state of the metal, its coordination number, and the number of d electrons on that metal.
(a) OsO4 (b) [Cr(H2O)6]3+ (c) [Cr(H2O)6]2+
(d) [Cr(H2O)4Cl2]+ (e) [Fe(H2O)6]2+ (f) [Co(NH3)6]2+
(g) WCl6 (h) [Pt(CN)4]2- (i) [Mn(H2O)6]2+
(j) Mn(CO)5Br (k) [AuCl2]- (l) [ReH9]2-
Explanation / Answer
(a) OsO4:
The oxidation state of the metal: +8
Coordination number: 6
The number of d electrons on the metal: zero (in Os atom totally 6 d - electrons are present. Os+8 have zero d-electrons (6s05d04f14). )
(b) [Cr(H2O)6]3+:
The oxidation state of the metal: +3
Coordination number: 6
The number of d electrons on the metal: three (4s03d3)
(c) [Cr(H2O)6]2+:
The oxidation state of the metal: +2
Coordination number: 6
The number of d electrons on the metal: four (4s03d4)
(d) [Cr(H2O)4Cl2]+:
The oxidation state of the metal: +1
Coordination number: 6
The number of d electrons on the metal: five (4s03d5)
(e) [Fe(H2O)6]2+:
The oxidation state of the metal: +2
Coordination number: 6
The number of d electrons on the metal: six (4s03d6)
(f) [Co(NH3)6]2+:
The oxidation state of the metal: +2
Coordination number: 6
The number of d electrons on the metal: seven (4s03d7)
(g) WCl6:
The oxidation state of the metal: +6
Coordination number: 6
The number of d electrons on the metal: zero (6s05d04f14)
(h) [Pt(CN)4]2-:
The oxidation state of the metal: +2
Coordination number: 4
The number of d electrons on the metal: eight (6s05d8)
(i) [Mn(H2O)6]2+:
The oxidation state of the metal: +2
Coordination number: 6
The number of d electrons on the metal: five (4s03d5)
(j) Mn(CO)5Br:
The oxidation state of the metal: +6 (sometimes CO has -1 charge)
Coordination number: 6
The number of d electrons on the metal: one (4s03d1)
(k) [AuCl2]-:
The oxidation state of the metal: +3
Coordination number: 2
The number of d electrons on the metal: three (6s05d8)
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