new topics among the chapter number two transition elements the second year second chapter transition elements start co transition elements among the discussion the transition elements definition the position in periodic table via types sumra types the total number of elements transition sumrati they create typical transitions that are in non-typical transitions other way general characteristic properties of transition elements of this sarasara electronic configuration now start aloo the transition elements the definition first one manga discus co transition elements transition elements what are transition elements that transition elements transition elements is frequent transition of electrons takes place in these elements so these are called transition elements transition [Music] transition [Music] transition of electron and as transition of electron takes place in these elements that's why these are called transition elements yo reason reason that a transition means transition means in between and between yeah transition means intermediate enter mediate intermediate elements periodic table the s block elements of the p block elements per month central position occupied in the periodic table the intermediate the in between the s black and p black elements that the position in periodic table i'm sure position in periodic table periodic table periodic table key that they elements positions today these are present between s and p block elements sn p block elements the more electro positive elements of s block and the more electronegative what is a definition of transition elements what is definition elements elements which have partially filled partially felt d are f sub shells in their atomic states atomic states are any other common most occurring oxidation state are called transition elements which have partially felt d are f sub shells in their atomic states or any other common are most common most oxidation states deal which common most commonly occurring acceleration state such elements 13 foreign transition elements transition elements are up two types transition elements r of two types d block transition elements d block transition elements and f block transition elements a block those elements which have partially fell d sub shells partially felled d sub shells in their atomic state or any other common most oxidation state are called d block transition elements while elements having partially felt f sub shells partially filled f sub shells in their atomic state are any common most occurring oxidation state are a block elements d block elements that a general electronic configuration n is one to two and n minus one electronic configuration explain n minus one d per decade 10 for electron n minus 2 n minus 2 these are not included in your course if you sk electron 1 2 14 general this will be 4s of 4 minus 1 4 minus the sorry for my n minus 1 d n minus 1 b 4 minus 1 foreign [Music] [Applause] [Applause] and why these are called nr third a fourth pep six seven or eight a group's eighty b third b fourth b fifth b up to second b b [Music] included [Music] transition vertical columns of elements in periodic table are called groups now the group first the second show the third fourth fifth sixth seven eight nine ten eleven twelve of six already eighteen have been included included in s category s black elements first and second angle because s sub shell can accommodate just two electrons because piece of shell can accommodate maximum six electrons yet d block elements ten gravity because these sub shell up to fourteen now a black elements we have fourteen groups reasons today because f sub shell can accommodate 14 electrons this was all about the d block elements end non-typical transition elements d block transition elements typical and non-typical non non-typical what are typical transition elements and what are non-typical typical type spatial or non-typical java special name reason sorry foreign actinium dash i mean also why these are kind of non-typical there's a non-typical secondary they do not possess all the properties of transition elements the transition these elements subgroup second b and sub group third b elements do not possess all the properties of transition elements the other property is no vector except only one property complex formation coordination complexes the transition element your main property the details of turkey complex formation coordination complexes in atomic state or any other common most acceleration state double transition element see no matlab these are called non-typical because they do not follow they do not obey all the properties of transition elements except only one property which is complex formation now that's why these are called non-typical second people last year this is third b yeah three number this is second b our twelfth number no three or twelve three or twelve children industry none typically table key chicken d block transition elements they have been well divided into four further transition series summary series the four series four series now d block transition elements d block transition elements they are arranged in total four series four series four series arranged four series first transition series first transition series first transition series that comes in and becomes a puritan first transition series scheme atomic number 21 28 28 takashi now 40 and 28 now there are total 68 transition elements in periodic table total 68 out of 68 one main transition element typical transition elements around about 60 ud no matter which is 68d for the non typical chittori mufikai will be a total 62 yes 60 round about the scadium to copper 29 clear that they general electronic configuration ns into n minus 1 d n minus 1 d but they get in the process of completion 4 minus 1 [Music] this is also called 3d series the first [Applause] second transition series second transition series second transitions t series start from atrium 39 up to silver 47 foreign that's why this series is also called 4d series 4d series [Music] 80 yo minus six minus one no five d but they get five d partially filled d partially per day that's why it is called five d series the fourth one the third one five 89 [Music] these were all about the transition elements typical non-typical series definition obviously position in periodic table total numbers next syrup description memoration write down general characteristic properties of transition elements are any four properties or any five properties generally properties of transition elements d black habarako transition elements details transition elements are a hard metals hard metals except yeah hot solids with humidity hard and solid hard and solid our transition elements are hard and solid except mercury mercury they are a metallic bond metal atom boundary metallic bond metallic bond today melting point and boiling point values the transition elements melting point boiling point of latest energy varies was say the baha'i reason due to strong metallic bonding metallic bond is a strong type of bond they have strong bond again third one properties variable acceleration state variable oxidation [Music] fourth one compounds are mostly colored colored compounds deer compounds are mostly mostly colored the transition element is due to the presence of unpaired electrons so most of their compounds in solid state are in solution palm are colored complex formation complex the complex formation the main property of transition elements that they can form coordination compounds coordination complexes compounds containing coordinate equivalent bonds are called coordination compounds coordination complexes compounds complaining containing complex ions complex molecules but still capable of have independent existence more than one kind molecules you became more than one kind nine cations room temperature pre-state existing such compounds are called coordination complexes detail will be later on we'll have to move to the transition elements main property there is a complex formation coverage coordination complexity bullet property li formation li formation coordination sorry transition elements have the main property that they can form allies homogeneous mixture of two or more than two metals are metal and enough metal reasons for the reason detail reason that is the transition elements atomic size is nearly equally nearly equally iron so for example the irons that are iron atoms next there are these are chromium alum this is chromium that are chromium have magnetic properties for transition elements see the magnetic properties magnetism due to the presence of uninfinite electron due to partially filled d subshell magnetic properties paramagnetic substances diamagnetic substances ferromagnetic substances further which will be discussed in detail later on eighth property catalytic properties catalytic properties transition elements directly are there compounds are generally used as a catalyst in order to speed up the rate of chemical reaction in order to save time transition elements directly of zeather that they compound mostly via oxides of transition elements property number nine transition elements are good conductors of heat and electricity good conductors the good conductors not too much tightly held up in mobile electronics now these are good conductors simply again transition elements hard and solid except mercury high melting point and boiling point varies they have variable oxidation states their compounds are mostly colored in solution in a solid state they have the ability of complex formation they can form a lies with other metals they have magnetic properties they are also used as a catalyst and they are good conductors of heat and electricity the very short questions next forward kegel transition series scandium via titanium vanadium chromium manganese iron atomic number scandium 21 titanium 22 that were a series electro right day metal after batter mulligan vindium 23 chromium 24 manganese 25 iron 26 cobalt 27 nickel 28 copper 29 and this is the non-typical authority science teacher is very cruel no scandium titanium vanadium chromium mangy fear copy m and manganese fear f e copy co nicolo prixo science teacher is very cruel science teacher is very cruel manga fear coffee science teacher is very cruel mangy fear 2s2 2 v6 3s2 3p6 4s2 3d of four oh sorry four s four s plus twenty electrons [Music] clear the yes 3 p 6 via ligori 3d of 4 s2 4 is 2 or 3 d1 was according to abba principles n plus l value the 3d referral n plus l the the principal quantum number they 3 n plus l various and various sub shells according to their increasing energy energy of the 3d s delta foreign s2 fell first because our metal penetration effect that was spent more time more time is close to the nucleus the clear shows 1s2 2 2 6 3 s 2 3 p 6 who say agassi 3 d 2 and 4 s 2 4 s 2 plus y wish foreign 3d 6 4 s 2 3 d 7 4 s 2 3 d 8 4 s 2 3 d 9 4 s [Music] [Music] these are more stable see more stable now in order to get extra stability one electron is promoted from 4s to 3d in case of chromium and one electron from 4s to 3d in case of copper ultima now why these are more stable hopper hop felt and full failed sub shells 3d 3d hubbard the sub shells are more stable more stable now what are the d x z d x square dash y square d z square d x y d y z d x z d x square dash y square and d z square nice distribution of electrons [Music] of the same energy are called degenerate orbitals these electrons can exchange their position regularly electrons can exchange their positions [Music] energy exchange takes place energy exchange takes place takes place in exchange for exchange foreign these are the most important ones