फाइंड एनर्जी ऑफ फोटो if वेब नंबर ऑफ इलेक्ट्रोमैग्नेटिक रेडिएशन इन 1 पॉइंट 6 * 10 के पावर माइनस 4 मीटर पर सेकंड
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electron gain enthalpy in general become more negative electron and less negative down a group there is some periodicity in balance for example among Representative elements the valence is either equal to the number of electrons in outermost battles aur 8 - the number
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