valence

• اسم يُستخدم في علم الأحياء لوصف القدرة النسبية على الارتباط أو التفاعل مع المستضدات أو الركيزة الحيوية، وفي الكيمياء للدلالة على القدرة الترابطية للذرة أو الجذر، معبَّرًا عنها بعدد ذرات الهيدروجين التي يمكنها الارتباط بها أو التي يمكنها إحلالها.

A noun used in biology to describe the relative capacity to unite or react with antigens or a biological substrate, and in chemistry to refer to the combining power of an atom or radical expressed in terms of the number of hydrogen atoms it can combine with or displace.

1. Chemical combining powerC1formalscientific

   The property of an atom or radical that determines its combining power, expressed in terms of the number of hydrogen atoms it can combine with or replace.

   التكافؤ

   • Carbon has a valence of four, allowing it to form four bonds.
   • The valence of oxygen is typically two.
   • Understanding valence is fundamental to predicting chemical reactions.

   المرادفاتvalency

2. Biological interaction capacityC2formalscientific

   The relative capacity of a substance, such as an antigen or antibody, to unite, react, or interact with a biological substrate.

   التكافؤ الحيوي

   • The valence of an antibody determines how many antigens it can bind.
   • Researchers studied the valence of the virus's surface proteins.
   • The antigen's valence influences the strength of the immune response.

   المرادفاتreactivity