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chemistry > transtion elemnet > Flashcards

transtion elemnet Flashcards

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10
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right the electronic configuration of the following and oxcdition state sc ti v cr mn fe co ni cu zn

A

sc +3 ti +2 , +3 , +4 v +2 , +3 , + 4 , +5 cr +2 , +3 , +6 mn +2 , +3 , +4 , +5 , +6 , +7 fe +2 , +3 , +4 , +5 , +6 co +2 , +3 , +4 ni +2 , +3 +4 cu +2 , +1 zn + 2

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11
Q

till me about the number of single electron in 1st series

A

the number of single electron increses graduly to rich mn and decreses graduly to rich zn

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12
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13
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the diff between oxidized and reduced

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oxidized = lose electrons and oxidation number increases reduced = gain electron and oxidation number decreases

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14
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19
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20
Q

what do you know about atomic mass of !st transtion element and except any element

A

it increases graduly with increasing their atomic number exsept nickel

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21
Q

why nickel is abnormal in his atomic mass

A

bec nickel has five isotopes with mass 58.7 u

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22
Q

the radii of transtion element are relively constant from ………..

A

cr to cu

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23
Q

there is …………in atomic radii as we move through first transtion

A

a little change

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24
Q

diff para magnetism

A

it is ocuer in ion , atoms and molucules which contines orbitals fill out by single electron

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25
Q

diff para magnetism

A

it is occurs in ion , atoms and molucules which contines orbitals fill out by single electron

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26
Q

the magntic moment and the magntic atteactive incrase by increasing

A

by increasing the single electron in d sup level

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27
Q

the magntic moment = 0 when

A

d suplevel is compltly filled by paring electron or embty from all electron

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28
Q

diff para magntic substance

A

it is the substance that atracrt to magnet duto presence of single electrons in orbitals of the last sup level

29
Q

diff di magnism

A

it is occurs in ion , atom and molucules which contines orbitals fill out by paried electron

30
Q

diff di substance

A

it is the substance repel to magnet duto lake of single electrons in orbitals of the last sup level

31
Q

the spindle movement of paried electrons are , so magnetic moment =

A

is oppiste each other =zero

32
Q

most transtion elements compound are para magnteic

A

bec most transtion element has a single electron in their orbitals of the d sup level

33
Q

iron II sulphate is a para magnetic substance

A

bec the electronic configuration of fe II ion is Ar 18 3d6 so fe II ion has 4 single electron so fe ion is para magntic supstance

34
Q

transtion element used in making alloys

A

bec there atomic radii is relatvly constant

35
Q

transtion element have a high melting and boling point

A

bec they have astrong metalic bond resulting from both the electrons of 4s and 3d

36
Q

transtion element has metalic bond resulting from

A

both the electrons of 4s and 3d

37
Q

most of transtion element have high denisty by increases atomic number

A

bec the atomic mass increases while the atomic volume is relatively constant

38
Q

high denisty increases by

A

by increases atomic number

39
Q

give me a example about varition in their chemical activity

A

cu has limted active iron is more active and rust in air sc very active replaces hydrogen of water vigorously

40
Q

white color composed into…………….each has of them ………..

A

7 color , and has a ceritien energy

41
Q

the number of transtion element 27 not 30

A

bec the IIb group not consderd as transtion elmenet bec the they compltily filled in their atomic state and only oxidation state state +2

42
Q

the oxidation states of elements of the first transtion elements incrases till group VIIB then gradully decreases till ritch IIB group

A

bec the single electron increase to rich mn and decreases to rich zn

43
Q

if the substance absorb the 7 color

A

the black color appears to eye

44
Q

right the color and their compolmntry color

A

red green red orange green blue orange blue orange yellow blue vilot yellow vilot

45
Q

most of ion of transtion elements are colored

A

duto existance of single electron in orbitals of the d sup level

46
Q

chromium III compound appears green

A

bec the energy of red color enough to excite the single electrons of cr+++ so it absorbs the red color and appears the green

47
Q

zn+2 ion coloer less

A

bec the d sup level is compltly filled so the all electron paired and the energy needed to excite electron is very high

48
Q

sc +3 ion is color less

A

bec the d sup level is empty

49
Q

diff catalyst

A

the substance which increases the rate of the reaction with out it self being changed

50
Q

the substance appears colored to the eye by choose the absorbed color the sum of colures which are not absorbed

A

the sum of color which are not absorbed

51
Q

the color that not absorbed by a subsstance is known as

A

complementry color

52
Q

arrange according to chemical activity sc - cu - fe

A

sc - fe - cu

53
Q

transtion element are metals

A

bec they are solid and have a metalic luster and good conductors of heat and electristy and they have melting and boiling point

54
Q

elemnets of group VIII are different from other transtion elment in their properties

A

bec this group simmillar in horizantal more than its vertical

55
Q

secound transtion series start and end by

A

Yttrium end cadmium

56
Q

3rd transtion series start and end by

A

lanthanum end mercury

57
Q

the first transtion series start after

A

calcium

58
Q

the element give the maximum oxidation state when

A

by losing all electrons of 4s and 3d suplevels

59
Q

the maximum oxidation number of any elemnet does not exceed its group number exsept

A

group IB

60
Q

denisty increase by increases what

A

atomic number

61
Q

ni has higher density than fe ti cr all the previous choose

A

all the previous

62
Q

transtion metals are attracted to external magnetic fileds

A

most transtion metals have a single electrons in the d sup level

63
Q

give reason the density of the elements of the first transition series increases by increasing of atomic numbers

A

d =

64
Q

the maximum oxidation number for transtion element in the element of the first transtion series

A

Mn

65
Q

the atomic number of a metal from the first transtion series it is magntic moment 2 =

A

atomic number + 28 or 22

66
Q

elements of group VIII are different from transition element in their properties

A

jkm

67
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A
68
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A

chemistry (10 decks)

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