Предмет: Химия, автор: vyolettauras

3. В Періодичній таблиці хімічних елементів періодів: а) 7 б) 8 в) 10 4. Металеві властивості елементів у ІІІ періоді: а) слабшають зліва направо б) посилюються зліва направо в) майже не змінюються

Срочнооооо даю 20балов

Ответы

Автор ответа: angelina01010

2

Ответ:

в ПСХЭ 7 периодов

металлические свойства в любом периоде ослабевают слева направо

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