1. Strongly electropositive elements react with water and acids. ǿ������ԭ��ͬˮ���ᷴӦ��
2. Is antigen of second liver surface electropositive what meaning? �Ҹα��濹ԭ����ʲô��˼��
3. Antigen of second liver surface why is somebody electropositive somebody be electronegative? Which had been planted? �Ҹα��濹ԭΪʲô��������������������?���ֺ���?