A substituent effect on the organic compound due to permanent polarity of the group is called ______?
A substituent effect on the organic compound due to permanent polarity of the group is called ______?
گروپ کی مستقل قطعیت کی وجہ سے نامیاتی کمپاؤنڈ پر متبادل اثر ______ کہا جاتا ہے؟