(a) Account for the following : (i) `Mn_(2)O_(7)` is acidic whereas MnO is basic. (ii) Though copper has completely filled d-orbital `(d^(10))` yet it

Question

(a) Account for the following : (i) `Mn_(2)O_(7)` is acidic whereas MnO is basic. (ii) Though copper has completely filled d-orbital `(d^(10))` yet it

(a) Account for the following :
(i) `Mn_(2)O_(7)` is acidic whereas MnO is basic.
(ii) Though copper has completely filled d-orbital `(d^(10))` yet it is considered as a transition metal.
(iii) Actinoids show wide range of oxidation states.
(b) Write the preparation of potassium permanganate from pyrolusite ore `(MnO_(2))`.

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Related Questions

Peroxide ionâ€¦â€¦ (i) has five completely filled antibonding molecular orbitals (ii) is diamagnetic (iii) has bond order one. (iv) is isoelectronic w

2 Answers 4 Views

While filling up electron in the atomic orbitals, 4s orbital is filled before 3d orbital but reverse happens during the ionisation of the atom. Explai

2 Answers 5 Views

i. Outstanding expense is a nominal account. ii. A capital account is a real account.

2 Answers 4 Views

i. A loan account is a personal account. ii. A goodwill account is a real account. iii. A discount account is a nominal account.

2 Answers 5 Views

A hollow copper sphere & a hollow copper cube of same surface area & negligible thickness , are filled with warm water of same temperature and placed

2 Answers 8 Views

If dark skin colour is controlled by dominant genes MNO and its recessive allele is mno,

2 Answers 7 Views

The Ph of basic buffer mixtures is given by : `Ph=Pk_(a)+`log `(["Base"])/(["Salt"])` whereas Ph of acidic buffer mixtures is given by : Ph =`pK_(a)+"

2 Answers 5 Views

It has been observed that `BF_(3)` does not hydrolyses completely whereas `BCl_(3)` or `BBr_(3)` get easily hydrolysed to form `B(OH)_(3)` and `HX`? E

2 Answers 5 Views

Despite plenty of nay-sayers, the textbook is dead. It just doesn’t know it yet and continues on walking about as though alive.

2 Answers 8 Views

After np orbitals are filled, the next orbital filled will be :- (a). `(n+1)s`(b). `(n+2)p`(c). `(n+1)d`(d). `(n+2)s`

2 Answers 4 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

(a) (i) `Mn_(2)O_(7)` (+7 oxidation state ) is acidic whereas MnO(+2 oxidation state ) is of basic nature.
For example
`underset("(Acidi)")((Mn_(2)O_(7))+2KOH to 2KMnO_(4)+H_(2)O`
`underset("(Basic)")(MnO)+2HCl to MnCl_(2)+H_(2)O`
(ii) Copper has `[Ar]4s^(1)3d^(10)` electronic configuration. However, in its most common oxidation state (+2), 3d orbitals are not completely filled (i.e., `3d^(9)` configuration). THerefore, it is regarded as a transition metal.