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A Trivalent impurity has __________ valence electrons ?
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![A trivalent impurity has ---- valence electrons] a) 4 b) 5 c) 6 d) 3](https://cdn-img.sharechat.com/bd5223f_s1w/compressedcompressed_gm_40_img_465989_ed247c0_1787455452899_sc.webp?tenant=sc&referrer=pwa-sharechat-v2&f=99_sc.webp&w=360)
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