Hellow guys, Welcome to my website, and you are watching ВАЛЕНТНОСТЬ 8 КЛАСС ХИМИЯ // Урок Химии 8 класс: Валентность Химических Элементов. and this vIdeo is uploaded by INTENSIVKURS - Учебный Центр для Школьников at 2021-04-12T04:30:40-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.