113. Задачка по химии №011 310

32. a) Write the electronic formula of an atom of an element with serial number 15. What is the maximum spin of p-electrons in an atom of this element?
b) What chemical bond is called a hydrogen bond? Between the molecules of what substances it is formed? Why do H2O and HF, having a lower molecular weight, melt and boil at higher temperatures than their counterparts?

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