Валентность
Flashcard
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
Марина Сидоренко
FREE Resource
Student preview

8 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Валентность фосфора в оксиде P2O3
Back
III
2.
FLASHCARD QUESTION
Front
Укажите (римской цифрой) валентность хлора в оксиде Cl2O7
Back
VII
3.
FLASHCARD QUESTION
Front
Валентность Са?
Back
2
4.
FLASHCARD QUESTION
Front
Ряд химических элементов, проявляющих только постоянную валентность: натрий, медь, кислород, фтор; железо, цинк, хлор; алюминий, магний, литий; алюминий, кальций, сера.
Back
алюминий, магний, литий
5.
FLASHCARD QUESTION
Front
Укажите формулу вещества, в составе которого марганец проявляет наибольшую валентность MnO, Mn2O7, MnO2, K2MnO4
Back
Mn2O7
6.
FLASHCARD QUESTION
Front
Каким символом обозначается "Железо"?
Back
Fe
7.
FLASHCARD QUESTION
Front
Валентность бывает постоянной и переменной
Back
Правда
8.
FLASHCARD QUESTION
Front
Фраза "10 молекул водорода"
Back
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