Question

Номер группы не совпадает с высшей валентностью для элемента: IBeArSi​

Answer 1

Для Аргона - Аr

Инертный элемент, не образует никаких соединений Ar⁰

Answer 2

I'm sorry, but I couldn't understand your message. It appears to be related to chemical elements or compounds. If you have a question or need information about a specific topic, please provide more context or clarify your request, and I'll be happy to assist you.

Answer 3

[A]