dbt within a dbt

This dbt is from what aieee said at http://targetiit.com/iit-jee-forum/posts/ino5-12714.html in post#12

Q Why ionic azides are stable while covalent azides are not ??

2 Answers

Actually , in covalent azides suppose an element M makes bondwith the azide ion. then , the extra

electron from M enters the vacant antibonding molecular orbital of 'N'. thus the bond order of N - N bond

attached to M becomes becomes less than the bond order of adjacent N - N bond. thus , the bond

lengths become different also.

This gives rise to an unsymmetrical structure , with two unstable N - N bonds. thus , these covalent azides

are unstable and many of them are used as detonators and explosives.

While , the high negative charge density of azide ion enables it to form stable ionic azides.

thx[1]

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