Anion Y − có cấu hình electron: 1s22s22p63s23p6. Trong bảng tuần hoàn Y thuộc ( giải thích) A. chu kì 3, nhóm VIIA. B. chu kì 3, nhóm VIA.

C. chu kì 3, nhóm VIIIA. D. chu kì 4, nhóm IA.

100 points answer quick 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.

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal