СH₃-CH₂-CH₂-C=O + H₂ → CH₃-CH₂-CH₂-CH₂-OH - бутанол-1 (кат. t°, Ni)
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H
СH₃-C(=O)-CH₂-CH₃ + H₂ → CH₃-CH(OH)-CH₂-CH₃ - бутанол-2 (кат. t°, Ni)
P2O3<span> + 3H</span>2O = 2H3PO<span>3
</span>PCl3<span> + 3H</span>2O = H3PO3<span> + 3HCl
</span>H4P2O6<span> + H</span>2O = H3PO3<span> + H</span>3PO<span>4</span>
4 - 1s2 2s2
7 - 1s2 2s2 2p3
10 - 1s2 2s2 2p6
13 - 1s2 2s2 2p6 3s2 3p1
15 - 1s2 2s2 2p6 3s2 3p3
18 - 1s2 2s2 2p6 3s2 3p6