Advertisements
Advertisements
Question
The oxidation state of Fe in [Fe(CO)5] is ______.
Options
+2
0
+3
+5
Advertisements
Solution
The oxidation state of Fe in [Fe(CO)5] is 0.
Explanation:
The oxidation state of the carbonyl group (CO) is zero.
Let, the oxidation state of Fe be ‘x’
`\implies` x + 5(0) = 0
`\implies` x + 0 = 0
`\implies` x = 0
Thus, the oxidation state of Fe in [Fe(CO)5] is 0.
APPEARS IN
RELATED QUESTIONS
Calculate magnetic moment of `Fe_((aq))^(2+) ion (Z=26).`
Give reasons Iron has the higher enthalpy of atomization than that of copper.
Why does the density of transition elements increase from Titanium to Copper? (at. no. Ti = 22, Cu = 29)
When acidified \[\ce{K2Cr2O7}\] solution is added to \[\ce{Sn^{2+}}\] salts then \[\ce{Sn^{2+}}\] changes to ______.
Fill in the blanks by choosing the appropriate word(s) from those given in the brackets:
(activation energy, Threshold energy, increased, lowered, partially, full, d-d transition, Benzoic acid, benzaldehyde)
Only those transition metal ions will be coloured which have ______ filled d-orbitals facilitating ______.
On the basis of the figure given below, answer the following questions:
- Why Manganese has lower melting point than Chromium?
- Why do transition metals of 3d series have lower melting points as compared to 4d series?
- In the third transition series, identify and name the metal with the highest melting point.
If enthalpies of formation of C2H4(g), CO2(g) and H2O(l) at 25°C and 1 atm pressure are 52, – 394 and – 286 kJ/mol respectively, the change in ethalpy for combustion of C2H4 is equal to
Sodium this sulphate is used in photography because of its:-
Consider the following standard electrode potentials (E° in volts) in aqueous solution:
| Element | M3+/M | M+/M |
| Al | - 1.66 | +0.55 |
| Tl | + 1.26 | -0.34 |
Based on these data, which of the following statements is correct?
Give two similarities in the properties of Sc and Zn.
