Вопрос
12. Select two elements that can exhibit a negative oxidation state in compounds. 1) Kr 2) I 3) Cu 4) Ca 5) H
Решения
3.4
(306 Голоса)
Софья
продвинутый · Репетитор 1 лет
Ответ
The two elements that can exhibit a negative oxidation state in compounds are 2) I and 3) Cu.
Объяснение
## Step 1The oxidation state of an atom in a compound is the charge that it would have if all bonds to atoms of different elements were 100% ionic. ## Step 2Elements that can exhibit a negative oxidation state are those that are more electronegative than the hydrogen atom. This is because they have a greater tendency to attract electrons towards themselves.## Step 3In the given options, Iodine (I) and Copper (Cu) are known to exhibit negative oxidation states. ## Step 4Iodine (I) can exhibit a negative oxidation state because it is more electronegative than hydrogen. ## Step 5Copper (Cu) can also exhibit a negative oxidation state because it can lose electrons to form a negative charge.