Предмет: Химия, автор: belayasofiya20

6. Відносна молекулярна маса сполуки R20 становить 94. Визначте елемент.
a) Na
б) К
B) Cs
г) Fr

7)Оберіть ряд з лужними елементами
а) Li, Be, B, C, N
б) Li, Na, Be, Mg
B) Li, Na, K, Rb, Cs
г) Li, Na, K, Cu, Rb

Ответы

Автор ответа: Grsa

Ответ:

6)а

7)в

Объяснение:

це проходиться в 8 класі якщо не помиляюсь

belayasofiya20: спасибо, не ошибаешься

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