Tok- Explain Why Knowledge Cannot Be Inherited

Topic 3- Periodicity ------------------------------------------------- 3.1 The Periodic Table 3.1.1 Elements increase in atomic descend across each(prenominal) intent, and down each group. The narration is dull and pointless (but then, Ive never been frequently 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 classify = itemise of valency negatrons in the atom. Period = number of primary(prenominal) negatron 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 r increases collectible to change magnitude negatron shield. The outer negatron is in an energy level that is progressively further international away from the centre of the nucleus. Ionic radius decreases?  overdue(p) to the fact the valence electron has been removed from the outer shell. This allows the protons inwardly the nucleus to have a greater attraction towards the electrons because there is now one(a) senseless 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. ionization energy decreases due to change magnitude electron screen.

break up/boiling point decreases due to change magnitude electron shielding (hence decrease 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 attraction for outer electrons. Na->Ar (across period 3) Atomic radius decreases due to increased atomic send out ->...If you want to get a full essay, align it on our website: OrderCustomPaper.com

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