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INORGANIC CHEMISTRY > D BLOCK ELEMENTS > Flashcards

D BLOCK ELEMENTS Flashcards

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1
Q

Mention D-block elements of 4th period.

A

Sc, Ti, V, Cr, Mn,
Fe, Co, Ni,Cu,Zn

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2
Q

Do all transition elements solid metals?

A

yes

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3
Q

what are the 2 types d block elements based on their configuration?

A
  1. Transitional
  2. NOn-transitional
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4
Q

What are non transition d block metals?

A

metals that produce only ions with d10 configuration.

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5
Q

mention non transition metals

ion of it with its configuration valence

A
  1. Zn 2+ —->
    3d 10
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6
Q

Is sc3+ a non-transition metal ?

A

NO
3d10 4s0

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7
Q

IS Cu a non tranitional metal?

A

NO , even cu+ —>3d10
cu2+ —> 3d9
therefore copper is a transition metal

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8
Q

Mention 2 transion metals.

A
  1. scandium
  2. copper
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9
Q

Mention a nontransition metal.

A
  • Zinc
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10
Q

From Sc to Ni what happens to atomic radii?

A

decreases

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11
Q

Why the atomic radiud dec. from sc to ni?

A

Attraction between nuclei and electrons is greater repulsions among electrons

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12
Q

From Ni to Zn what happens to atomic radius?

A

Increases.

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13
Q

How cu and zn radii increases?

A

Paired electrons exert more repulsive forces

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14
Q

What are the natural occurences of Titanium?

A
  1. Ilmenite - FeTiO3
  2. Rutile- TiO2
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15
Q

3 Natural occurences of Ferrous.

A
  1. Siderite - FeCo3
  2. Haematite - Fe2O3
  3. Magnetite - Fe3O4
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16
Q

Natural occurences of copper.

A

Copper Pyrite
CuFeS2

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17
Q

Mention Oxides of Chromium in increasing order of oxdizing number , with acidity.

A

2 - CrO - WB
3 - Cr2o3 - Amphoteric
4 - CrO2 - WA
6 - CrO3 - A

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18
Q

Mention Oxides of Manganese in increasing order of oxdizing number , with acidity.

A

2 - MnO - Basic
3 - Mn2O3 - Weakly basic
4 - MnO2 - Amphoteric
6 - MnO3 - WEakly acidic
7 -Mn2O7 - Acidic

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19
Q

Electronegativity of Sc

20
Q

Oxidation states of Sc

21
Q

Oxidation states of Ti

22
Q

4th period eke 1st ionization wedi dblock elemnts walada? s block elements walada?

Study These Flashcards
A

4th period eke thiyena D block elements wala 1st ionization energy wedi > s block elementswlt wada.

23
Q

1.5 electronegativity 1k thiyenne monatada?

Study These Flashcards
A

15 inne mn & thiraniyai
Mn , Ti

24
Q

Cu ge electronegativity?

25
Reactivity wedi d block elementswalda ? K Ca walada?
K Ca wala
26
1.6 thun3 dena kauda?
V Cr Zn
27
1.8 thun3 dena kauda?
Fe Co Ni
28
+4 , +5 oxidation states thiyenne katada?
V45
29
Sc oxidation state
+3 | Thun skaya
30
Ti oxidation state
+3 +4 | Ti 3 4k kada
31
Cr oxidation state
+2 +3 +5 +6 | Kara 2 3 , 5 6
32
Mn oxidation state
+2 +3 +4 +7 | mn de thu 4da 7...
33
Fe ,Co ,Zn oxidation state
+2 +3 | FeCoZinc 2,3
34
cupper oxidation state
+1 +2 | mula danne thamba witharai
35
Ni oxidation state
+2 | nikn 2k dunna
36
period eke left to right yaddi what happens to nuclear charge shielding effect
both increases (two counter effects) electrons towards 4s2 increases
37
how first ionization varies in the 4th period of d block elements
first ionization energy slightly increases
38
s block ekata comparative boiling and melting point wedi sgeda dgeda ?
dge boiling and melting points wedi godaak.
39
most d block ions coloured,da colourless,da? colourless ion 2.
majority coloured sc & Zn - colourless
40
in acidic medium Dichromate and chromate reduce wenne katada?
Cr3+
41
Dichromate acidic medium ekka react kalama , 1. H 2 S 2. So 2 3. Fe 4. conc HCl | katada convert (oxidize wenne)
1. s 2. so4 2- 3. fe3+ 4. cl2 , cl-
42
**Dichromate + __H2S + __H+** ----> **__Cr3+ + __S + __H2O**
Dichromate +**3** H2S +**8** H+ ----> **2**Cr3+ + **3**S + H2O
43
**Dichromate + __SO2 + __H+** ----> **__Cr3+ + __sulphate ion + __H2O**
**Dichromate + 3 SO2 + 2H+** ----> **2Cr3+ + 3 sulphate ion + H2O**
44
**Dichromate + __Ferrous ion + __H+** ----> **__Cr3+ + __Ferric ion + __H2O**
**Dichromate + 6 Ferrous ion + 14 H+** ----> **2 Cr3+ + 6 Ferric ion + 7 H2O**
45
**Dichromate + conc ___ HCl** ----> **__Cr3+ +Cl2 ion + Cl- __H2O**
**Dichromate + __Ferrous ion + __H+** ----> **__Cr3+ + __Ferric ion + __H2O**
46
**Dichromate + ___H+ + ___electrons** | what will form
Cr3+ + ___H2o

INORGANIC CHEMISTRY (2 decks)

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