1. № 16 сера. ₊₁₆S 1s²2s²2p⁶3s²3p⁴
2. 3)
3. 1)
4. 1)
5. 2)
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1. № 16 сера. ₊₁₆S 1s²2s²2p⁶3s²3p⁴
2. 3)
3. 1)
4. 1)
5. 2)