https://www.khanacademy.org/science/grade-9-chemistry-snc-aligned/x22d5b83c2ea2dc38:atomic-structure/x22d5b83c2ea2dc38:formation-of-cations-and-anions/v/periodic-trend-of-valency-ur 2025-08-08T00:24:37.843818748Z Periodic trend of valency Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Periodic trend of valency Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/19gKRjjc5OM.mp4/19gKRjjc5OM.mp4 667 Valency https://www.khanacademy.org/science/class-9-chemistry/x46dd29ce84a663ea:structure-of-the-atom/x46dd29ce84a663ea:how-are-electrons-distributed-in-various-shells/e/find-the-valency-of-an-atom 2021-04-29T08:03:16Z Find the valency of an element Let's practice to find the valency of a neutral atom given its atomic number. Chaitra exercise https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:inside-the-atom/x0f256b8de9c7cf34:atomic-models/e/lo-3-2-atomic-models 2026-04-07T23:17:37.123726494Z Atomic models Let's solve some problems to better understand the various atomic models proposed by different scientists. Aakash Bagga exercise