प्रश्न 1*
1po
किस तत्व तक अष्टक का नियम लागू हो पाया
(a) ऑक्सीजन
(b) कैल्सियम
(c) कोबाल्ट
(d) पोटैशियम
Answers
Answered by
28
Answer:
b calcium is right answer
Answered by
1
Answer:
correct answer is option b
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