The formula of the volatile hydrogen compound of the element E, the electronic formula of which is 1s2 2s2 2p6 3s2 3p4

If the electronic formula of the ELEMENT itself is meant, then it is sulfur.

1s2 2s2 2p6 3s2 3p4 – there are 16 electrons in this formula. In the periodic table of chemical elements D.I. Mendeleev’s sixteenth number is just sulfur.

And then the formula of our substance will look like this:

SH2, or rather H2S is hydrogen sulphide, refers to volatile compounds.

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