A polyatomic ion is composed of C, N, and an unknown ele- ment X. The skeletal Lewis structure of this polyatomic ion is 2

[XOCON] . The ion X has an electron configuration of

2 10 6

[Ar]4s 3d 4p . What is element X? Knowing the identity of X,

complete the Lewis structure of the polyatomic ion, including

all important resonance structures.

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Word equation for k(s) +h2o(l) yield koh (aq) + h2

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?