Строения атома + периодический закон (задания из РТ)

Flashcard
•
Chemistry
•
11th Grade
•
Hard
Снежана Левко
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22 questions
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1.
FLASHCARD QUESTION
Front
Элемент Х в основном состоянии: группа?
Back
5) VА.
2.
FLASHCARD QUESTION
Front
В VIIА-группе неметаллические свойства простых веществ:
Back
Уменьшаются.
3.
FLASHCARD QUESTION
Front
Неметалл из списка: марганец, ксенон, бериллий, вольфрам, барий.
Back
Ксенон
4.
FLASHCARD QUESTION
Front
Элемент Х с 2 неспаренными электронами на внешнем уровне:
Back
S (Сера)
5.
FLASHCARD QUESTION
Front
Металлические свойства ослабевают в ряду: Na, Li, Be.
Back
Правильный ответ: 4) Na, Li, Be.
6.
FLASHCARD QUESTION
Front
Number of neutrons in an atom:
Back
21
7.
FLASHCARD QUESTION
Front
Электронная конфигурация атома элемента в основном состоянии. Формула высшего оксида:
Back
Э2O5
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