tag:blogger.com,1999:blog-6478766310793155238.post7203800073678768256..comments2024-03-04T16:37:43.407+05:30Comments on CHEM BRAINS: d - Block Elements One Mark QuestionsRavi Nhttp://www.blogger.com/profile/07272269508697336933noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6478766310793155238.post-69971906454586728022018-09-02T18:38:29.583+05:302018-09-02T18:38:29.583+05:30It is very usefulIt is very usefulAnonymoushttps://www.blogger.com/profile/18257983364931763021noreply@blogger.com