Answer:
[Kr] 4d² 5s²
Explanation:
In group 2 and period 2 is the element Zirconium. Here's an example A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium, we make the substitution of [Ne] for the 1s22s22p6 part of the configuration. Sodium's noble gas configuration becomes [Ne]3s1.
Explanation:
7 4th CNN to CNN u 4th f7 4th d7 hmm
I had this question before if your answer choice D) says it had more mass than the rest of the atom. then that will be it :)
Answer:
True
Explanation:
Pure substances are made of the same material throughout and have the same properties throughout.