general chem questions

[issa]

do we have to memorize the solubility rules?
and do we have to memorize the order of 1s 2s 2p 3s 3p 3d .............?

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[Notoriousjae]

do we have to memorize the solubility rules?
and do we have to memorize the order of 1s 2s 2p 3s 3p 3d .............?

yes and yes, although its not that hard to memorize the order of hybridization
you have to know solubility rules to be able to solve net ionic equations.