We look at the electronic structures of K and Br

We look at the electronic structures of K and Br -...

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We look at the electronic structures of K and Br. 4s 4p K [Ar] Br [Ar] ¯ ¯ ¯ and the 3d electrons The atoms form ions with these electronic structures. 4s 4p K + same configuration as [Ar] Br - ¯ ¯ ¯ ¯ same configuration as [Kr] Formation of Ionic Compounds Write the Lewis dot formula representation for the reaction of K and Br. You do it! Formation of Ionic Compounds There is a general trend evident in the formation of these ions. Cations become
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Unformatted text preview: isoelectronic with the preceding noble gas. Anions become isoelectronic with the following noble gas. Formation of Ionic Compounds In general for the reaction of IA metals and VIIA nonmetals, the reaction equation is: 2 M (s) + X 2 ® 2 M + X-(s) – where M is the metals Li to Cs – and X is the nonmetals F to I. Electronically this is occurring. ns np ns np M ® M + X ¯ ¯ ¯ ® X-¯ ¯ ¯ ¯...
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