SELECT * FROM question_mgmt as q WHERE id=1274 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=43 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

Give the number of electrons in the species , H2 and

Answer:

Now A negative charge on the species indicates the gain of an electron by it & A positive charge denotes the loss of an electron

: Number of electrons present in hydrogen molecule (H2) = 1 + 1 = 2

∴ Number of electrons in  = 2 – 1 = 1

H2: Number of electrons in H2 = 1 + 1 = 2

: Number of electrons present in oxygen molecule (O2) = 8 + 8 = 16

∴ Number of electrons in = 16 – 1 = 15


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