19 K ve 16 S elementlerinin olusturduklari bilesigin LEWİS yapisini gosteriniz. Arkadaslar kimya projem lutfen kesin eminseniz yapin ve aciklayatak yaparsaniz sevinirim.

##ACİKLAYAN VE EMİN OLAN DİSİNDA KİMSE CEVAP YAZMASİN HEM BASKASİNİN CEVAP VERME HAKKİNİ ALİYOSUNUZ HEMDE EMEK VERENLERE RAGMEN BEDAVAYA PUAN ALMAYA CALİSİYOSUNUZ ##​

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Helium decays to form lithium. which equation correctly describes this decay?