Элемент Y из соединения X2YO4 находится в 4 периоде побочной подгруппе 6группы .число нейтронов в нем больше числа протонов на5 единиц.Элемент Х расположен в 4периоде главной подгруппе 1 группы и содержит 20 нейтронов.Опрелелите относительную молекулярную массу соединения

Элемент Y из соединения X2YO4 находится в 4 периоде побочной подгруппе 6группы .число нейтронов в нем больше числа протонов на5 единиц.Элемент Х расположен в 4периоде главной подгруппе 1 группы и содержит 20 нейтронов.Опрелелите относительную молекулярную массу соединения
- Предмет:
  Химия
- Автор:
  arelyhodge
- 6 лет назад

Ответы 1

K₂CrO₄
Ar(₂₄Cr)=24+24+5=53
Ar(K)=39
Mr(K₂CrO₄)=39*2+53+16*4=195
- Автор:
  anise
- 6 лет назад
- 0
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