What is the electron configuration for helium (He)?
1s1
1s2
1s22s1
1s22s2...
Answers: 1
Chemistry, 22.06.2019 12:30, hala201490
Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)
Answers: 1
Social Studies, 23.07.2019 23:40
Social Studies, 23.07.2019 23:40
Business, 23.07.2019 23:40