limitations of octet rule?

1.	limitations of octet rule?
Answer» thanku<br>The major limitations of Newlands\' law of octaves were : (i) It was applicable to only lighter elements having atomic masses upto 40 u, i.e., upto calcium. After calcium, the first and the eighth element did not have similar properties.<br><article data-post-id="86502" data-topic-id="69151" data-user-id="10501" id="post_2">Limitations of octet rule:\t\tThe incomplete octet of the central atom.\tIn some compounds, the number of electrons surrounding the central atom is less than eight.\tThis is especially the case with elements having less than four valence electrons. Examples are LiCl, BeH2\xa0and BCl3.\t\t\tIn a number of compounds of thir period elements, there are more than eight valence electrons around the central atom.\this is termed as the expanded octet. The octet rule does not apply in such cases.\tExamples of such compounds are SF6, H2SO4.\t\t\tThe rule is based on inert nature of noble gases. However, some noble gases (for example xenon and krypton) combine with oxygen\tand fluorine to form a number of compounds like XeF2, KrF2, XeOF2\xa0etc.\t<section><nav>\xa0</nav></section><section>\xa0</section></article>

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