Answer is:
Lower tendency of N to form covalent bond
122) Number of lone pair of electrons on Xe atoms in XeF2, XeF4 and XeF6 molecules are respectively:
Answer is:
3, 2, 1
Answer is:
PCl5 and HCl are formed and the mixture cools down
Answer is:
An interaction with water vapours contained in the humid air
Explanation:
Transition of white to grey tin occurs at any temperature below 15.2oC, it becomes rapid at −50oC.