Chemistry, asked by yuvrajsinghthakur299, 19 days ago

एक विद्युत चुम्बकीय विकिरण की तरंगदेय 400nm । अत: तरंग संख्या होंगी (1) 2.5x10 cm-1 (2)2.5x100 cmri (3) 2.5x106 cm (4) 2.5x10 cm

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