Periodicity

back to IB Chemistry = Topic notes =

= Investigations = = Resources = Use [|webelements] to explore trends of various physical properties. Or this one [|periodic table]. for quick revision



Animations
[|atomic and ionic radii] [|transition metals]

** Tutorials **
[|Periodicity] [|trends in successive ionization energies] [|A level reference material on transition metals] [|atomic radii] [|how are the bonds formed in complex ions] [|different oxidation states of chromium] this link will also allow you to go to links for other transition metals. [|Complex formation][|Complexes and colour]

Images
Alkali metals Halogens
 * lithium || sodium || potassium ||
 * [[image:http://t3.gstatic.com/images?q=tbn:ANd9GcSEdaWrdhqAbeEuUD5sqrwhRhQW0jOAuAQtuNEIMSFLnbwkCV4w_JNvjg width="121" height="105"]] || [[image:http://t0.gstatic.com/images?q=tbn:ANd9GcQyexVIYCF9Zk9tnSfCpXypIp4DeZz2SbXtpnq4yZCz4YVa_0BlT_XlbXs width="116" height="116"]] || [[image:http://t1.gstatic.com/images?q=tbn:ANd9GcRrMWEvfO83I5uzfOswpb7wa15SWStNcQahsT2DeOA0a44A9nKW2zVXlPs width="121" height="103"]] ||
 * fluorine || chlorine || bromine || iodine || astatine ||
 * [[image:http://t2.gstatic.com/images?q=tbn:ANd9GcSmj8C3iuw31M6jz_gYiauCM5ruaGvE8S4TwmcbiCkhP8qMhUjxoH319NLRUQ width="133" height="133"]] || [[image:http://t0.gstatic.com/images?q=tbn:ANd9GcSIpExk0YtpayBfyvxz5xegO7SAdwa8b6pT68qzKfn9oGxFiPr5n_rlAHF- width="139" height="150"]] || [[image:http://t2.gstatic.com/images?q=tbn:ANd9GcTyr_m5woxKg79emkFDpPbjVYhaKYGl_HMcPQsqkLogt5ftwHDgmZ83Dw width="89" height="119"]] || [[image:http://t2.gstatic.com/images?q=tbn:ANd9GcTH4Hz54U4tWvTCENSigZ0GXJ-igwOYCOOa0WcCBQ6UTu4eVHZkW9Riy-WM width="149" height="112"]] || [[image:http://t2.gstatic.com/images?q=tbn:ANd9GcSM16OllfySCFe2tUJA4KqUVSGbQC4MCRiCtxbzBv51-Lx1hoaFAeH-zA width="118" height="89"]] ||

Which colors are exhibited?
This color wheel demonstrates which color a compound will appear if it only has one absorption in the visible spectrum. For example, if the compound absorbs red light, it will appear green. **λ __absorbed__ versus color __observed__** 400 nm Violet absorbed, Green-yellow observed (λ 560 nm) 450 nm Blue absorbed, Yellow observed (λ 600 nm) 490 nm Blue-green absorbed, Red observed (λ 620 nm) 570 nm Yellow-green absorbed, Violet observed (λ 410 nm) 580 nm Yellow absorbed, Dark blue observed (λ 430 nm) 600 nm Orange absorbed, Blue observed (λ 450 nm) 650 nm Red absorbed, Green observed (λ 520 nm) = = = Links to IGCSE Edexcel chemistry = 2.1 understand the terms group and period 2.2 recall the positions of metals and non-metals in the Periodic Table 2.3 explain the classification of elements as metals or non-metals on the basis of their electrical conductivity and the acid-base character of their oxides 2.4 understand why elements in the same group of the Periodic Table have similar chemical properties 2.5 understand that the noble gases (Group 0) as a family of inert gases and explain their lack of reactivity in terms of their electronic configurations 2.6 describe the reactions of these elements with water and understand that the reactions provide a basis for their recognition as a family of elements 2.7 describe the relative reactivities of the elements in Group 1 2.9 recall the colours and physical states of the elements at room temperature 2.10 make predictions about the properties of other halogens in this group 2.11 understand the difference between hydrogen chloride gas and hydrochloric acid 2.12 explain,in terms of dissociation, why hydrogen chloride is acidic in water but not in methylbenzene 2.13 recall the relative reactivities of the elements in Group 7 2.14 describe experiments to show that a more reactive halogen will displace a less reactive halogen from a solution of one of its salts 2.15 understand these displacement reactions as redox reactions
 * 2.8 explain the relative reactivities of the elements in Group 1 in terms of distance between the outer electrons and the nucleus **

= =
 * Revision **