for onpage we use 3 main tags title meta description meta keywords Is there preference do matter, I mean to say about following sequence. <title></title> <description> <keyword> this sequence is beneficial OR <title></title> <keyword> <description> this one is good Is there is impotance of among sequence in search engine.
you may use any of them as sequence doesn't matter.. both are fine but only look wise the following will be good practice : <title></title> <description> <keyword> <other meta tags>
You can use the both format. SE will crawl your all details. But I personally prefer this format <title> <description> <keyword> <other meta>
<title></title> <keyword> <description> This sequence is good but use it like <title></title> <Meta keyword> <Meta description>
I love below sequence , also do not forget to put your keywords inside of description this is very much benefited <title></title> <keyword> <description>
Better place the description tag in front of the keywords. BTW, this is not going to affect on google, but I can't be sure about the other Search Engines (Bing, Yahoo, etc.)
title and meta description is more important and you might prefer to leave keywords tag - google does not see it but other search engines do see. up to you!
Sequence does not matter in crawling, search engines crawl in any sequence but it is good to keep the sequence in standard format