ExamPlay Light Logo
Registrazione

WAEC - Chemistry (2002 - No. 18)

An element Y has the electronic configuration 1s22s22p6623p4. To what period does it belong in the periodic table?
3
4
5
6

Commenti (0)

Accedi per commentare
Annuncio
BrainBehindX Inc Logo
©2026; Offerto da BrainBehindX Inc