Tok- Explain Why Knowledge Cannot Be Inherited

Topic 3- Periodicity ------------------------------------------------- 3.1 The Periodic Table 3.1.1 Elements increase in atomic descend across severally finis, and down each group. The narration is dull and pointless (but then, Ive never been some(prenominal) of a history fan) and can probably be ignored. *Mendeleev turns in his grave* 3.1.2 host  the columns going down. Period  the rows going across. 3.1.3 concourse = design of valency negatrons in the atom. Period = number of principal(prenominal) electron ticktockss, p , d and f blocks as set forth above. ------------------------------------------------- 3.2 Physical Properties 3.2.1 Li->Cs (down the alkali metals) Atomic wheel talk increases collectible to change magnitude electron shield. The outer electron is in an energy level that is progressively further onward away from the centre of the nucleus. Ionic radius decreases?  repayable(p) to the fact the valence electron has been remov ed from the outer shell. This allows the protons inwardly the nucleus to have a greater attraction towards the electrons because there is now ace exceptional proton more compared to the amount of electrons. in that respect is also one fewer energy level, because the outer shell has effectively been removed. ionisation energy decreases due to change magnitude electron shield. melting/boiling point decreases due to increase electron shielding (hence reduced forces). Electronegativity decreases due to increase shielding (hence decreased attraction for outer electrons). F->I (Down the halogens) Atomic radius increases due to increased electron shielding. Ionic radius increases due to increased electron shielding. Ionisation energy decreases due to increased electron shielding. Melting/boiling point increases due to increased number of electrons->increased london dispersion forces. Electronegativity decreases due to increased shielding -> decreased attrac tion for outer electrons. Na->Ar (across! period 3) Atomic radius decreases due to increased atomic push ->...If you want to get a full essay, align it on our website: OrderCustomPaper.com

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