inturducion about transtion element

Question 1

transtion elment are located

Answer 1

in the middle of the periodic table beween s block and d block

Question 2

what is the number of transtion element

Answer 2

the number of transtion element more than 60 element

more than half the number of known elements

Question 3

transtion element divided into

Answer 3

1. main transtion element d block
2. inner transtion f block

Question 4

sm3 first transtion series bl trtyp

Answer 4

sc , ti , v , cr . mn , iron , copalt , nickel , cu , zn

Question 5

if you want know period number =

Answer 5

number for last s sup level

Question 6

if you want to know group number =

Answer 6

number of electrons of s sup level + number of electron of d sup level

Question 7

in the main transtion elements electrons occupying what sup level and how

Answer 7

ind d sublevel in sequence

Question 8

1. d sup level can occupied by how man electron
2. and main transtion element has how many columns and why
3. and how many group and why
4. and tell me group from start to end

Answer 8

1. 10 electron
2. 10 columns due to the main transtion element occupied by electron in d sub level in sequence
3. 8 group duee group number 8 has coulmns
4. IIIB , IVB , VB , VIB , VIIB , VIIIB , IB , IIB

Question 9

why the group VIIIB different from the other transtion elemnt in their properties

Answer 9

because it is simillar in horizonaly more than itis vertical

Question 10

2st transtion series start and end

Answer 10

yttrium

cadmium

Question 11

3st transtion series start and end

Answer 11

lanthanum

mercury

Question 12

diff oxidation

Answer 12

lose electrons and oxidation number increases

Question 13

reduction

Answer 13

gain electron and oxidation number decreases

Question 14

dif oxcidtion number

Answer 14

it is the number of electric charges carried by the atom in the molecule and show the number of lost or gained electron

Question 15

من الاخر اه هي oxidation state الطلبها main transtion element

Answer 15

SC +3 only , SC₂ O₃

Ti +4 . TiO₂

V +5 . V₂ O₅

Cr +3 Cr₂ O₃

Mn bos f

</sub>

Question 16

tell me about single elecron in 1s transtion

Answer 16

the number of single electron increase till reach the Mn

he decreases tell reach zinc

Question 17

the electronic configuration of cr and cu is abnormal why

Answer 17

bec the elecrionc configuration of cr is (Ar18 , 4s1 , 3d5) so the the s sup level and the d sup level is half filled , and the elecrionc configuration of cu is (Ar18 , 4s1 , 3d10) so the s sup level is half fiiled and d sup level is completly filled and the atom become less energy and more staple when the sup levels half or compltley

Question 18

what is the ion

Answer 18

itis an ion lose or gain electrons

Question 19

dif of ioniztion potential

Answer 19

it is the energy needed to remove electrons

Question 20

it easy to oxidize iron II ion to iron III ion where it is difficult to oxidize manganes II ion to manganese III ion

Answer 20

bec iron II ion is Ar18 , 3d6 but iron III ion is Ar18 , 3d5 iron III ion is more staple du to d sup level is half filled and the reaction goes toword the formition of the more staple combound but manganes II is Ar18 , 3d5 but in manganes III ion is Ar18 3d4 so the manganes II ion is more staple than mangnes III ion duto the d sup level is half filled so the mnanganes II ion difficult oxidize to manganes III ion

Question 21

transtion element have different oxidation states while representative elements have one oxidation state

Answer 21

1. bec 4s and 3d are close in energy so the atom of the main transtion elements oxidized by losing electrons from 4s and 3d suplevels in sequence and the ionization potentials for the transition element increases gradually while
2. in represntative metals the ioniztion pottentials of is very hard duto breaking a complte energy level

Question 27

all elements in 1st transtion series give ion +2 exsept SC

Answer 27

bec the electronic configuration of sc is Ar18 4s2 3d1 that easy to be scandium III ion to be more staple duto d sup level become empty

Question 28

the 4th ioniztion potential of scandium is high

Answer 28

bec it is diffcult to breack a completed energy level

Question 29

when the main transtion element gives ther maximum posiive oxidation state

Answer 29

by losing all electron in 4s and 3d sup level

Question 30

the oxidation state increases from ,,,,,,,,,,, and illl reaching …………… in group ……. then decrerase till reaching …… in group ,,,,,,,,

Answer 30

sc +3

Mn+7

VIIB

ZINC +2

IIB

Question 31

the maximum oxidation number of any element does not exceed iis group number except ……..

Answer 31

group IB

Question 32

coinage metals are considered as a transtion element

Answer 32

bec the d sup level incomplitly filled in the oxidtion state

Question 33

diff transtion elements

Answer 33

its is the elment in which their orbitles occupied by electron but not completely filled with electron either in the atomic sate and the oxcidion state

Question 34

the group IIB is non transtion element

Answer 34

bec the d sup level incompltly filled atomic state and in only oxidtion state +2