From the following pairs of ions which one is not an iso-electronic pair ?
(a) Fe2+,Mn2+ (b) O2-,F-
(c) Na+,Mg2+ (d) Mn2+,Fe3+
(2021)
Best YouTube to MP3 Converter
Tube MP3 is the leading converter which allows you to convert YouTube videos to MP3 files with just a few clicks. It supports high quality MP3 up to 320kbps. Enjoy listening to your favorite YouTube songs in offline mode.