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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

A

1.3

20
Q

Oxidation states of Sc

A

+3

21
Q

Oxidation states of Ti

A

+3
+4

22
Q

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

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?

A

15 inne mn & thiraniyai
Mn , Ti

24
Q

Cu ge electronegativity?

A

1.9

25
Q

Reactivity wedi d block elementswalda ? K Ca walada?

A

K Ca wala

26
Q

1.6 thun3 dena kauda?

A

V
Cr
Zn

27
Q

1.8 thun3 dena kauda?

A

Fe
Co
Ni

28
Q

+4 , +5 oxidation states thiyenne katada?

A

V45

29
Q

Sc oxidation state

A

+3

Thun skaya

30
Q

Ti oxidation state

A

+3
+4

Ti 3 4k kada

31
Q

Cr oxidation state

A

+2
+3
+5
+6

Kara 2 3 , 5 6

32
Q

Mn oxidation state

A

+2
+3
+4
+7

mn de thu 4da 7…

33
Q

Fe ,Co ,Zn oxidation state

A

+2
+3

FeCoZinc 2,3

34
Q

cupper oxidation state

A

+1
+2

mula danne thamba witharai

35
Q

Ni oxidation state

A

+2

nikn 2k dunna

36
Q

period eke left to right yaddi what happens to
nuclear charge
shielding effect

A

both increases (two counter effects)
electrons towards 4s2 increases

37
Q

how first ionization varies in the 4th period of d block elements

A

first ionization energy slightly increases

38
Q

s block ekata comparative boiling and melting point wedi sgeda dgeda ?

A

dge boiling and melting points wedi godaak.

39
Q

most d block ions coloured,da colourless,da?
colourless ion 2.

A

majority coloured
sc & Zn - colourless

40
Q

in acidic medium Dichromate and chromate reduce wenne katada?

A

Cr3+

41
Q

Dichromate acidic medium ekka react kalama ,
1. H 2 S
2. So 2
3. Fe
4. conc HCl

katada convert (oxidize wenne)

A
  1. s
  2. so4 2-
  3. fe3+
  4. cl2 , cl-
42
Q

Dichromate + __H2S + __H+
—->
__Cr3+ + __S + __H2O

A

Dichromate +3 H2S +8 H+
—->
2Cr3+ + 3S + H2O

43
Q

Dichromate + __SO2 + __H+
—->
__Cr3+ + __sulphate ion + __H2O

A

Dichromate + 3 SO2 + 2H+
—->
2Cr3+ + 3 sulphate ion + H2O

44
Q

Dichromate + __Ferrous ion + __H+
—->
__Cr3+ + __Ferric ion + __H2O

A

Dichromate + 6 Ferrous ion + 14 H+
—->
2 Cr3+ + 6 Ferric ion + 7 H2O

45
Q

Dichromate + conc ___ HCl
—->
__Cr3+ +Cl2 ion + Cl- __H2O

A

Dichromate + __Ferrous ion + __H+
—->
__Cr3+ + __Ferric ion + __H2O

46
Q

Dichromate + ___H+ + ___electrons

what will form

A

Cr3+ + ___H2o

INORGANIC CHEMISTRY (1 decks)

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