마스터프렙 No.1 유학생 전문 인터넷 강의 사이트

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Title	[Roy Lee] How is NH3 a polar molecule?
	General Science Chemistry, Lesson 8, Intramolecular Bonds 2		8
Author	Sun***	Date Posted	2024-06-28 오전 2:30:10
I hope you are having a good day, I have a question for you. How is NH3 a polar molecule? The electronegativity of Nitrogen is 3.0, but for hydrogen it is 2.1 in NH3, I thought that since there are 3 hydrogen atoms in NH3, it should have been 2.1x3 to make 6.3, 6.3>3.0, so I wondered how nitrogen was pulling the electrons of 3 hydrogens, if the hydrogens were pulling back with a stronger force. I believe that nitrogen can only pull with the power in 1.0 (3.0/3) on each hydrogen electron, so if nitrogen only pulled with the power of 1.0 on 1 hydrogen electron, and if that hydrogen was pulling back with the power of 2.1, shouldn't nitrogen be divided into the 3 parts and distributed to the 3 remaining hydrogens? For 2.1>1.0. Could you please explain this to me? Thanks!
2024-06-30 오전 7:58:24 Hello! The electronegativity values are not added together to create a total value they are intrisic values of the element itself. When we talk about the hydrogen atoms of NH3, and refer to the electronegativity we talk about each individual hydrogen atom as a single entity, not as a lump sum of 6.3 And because there is a large difference between nitrogen and hydrogen, there is unequal sharing of the electrons, resulting in polarity formed on one side of the molecule. think about how we talk about CH4. I am not adding 4 hydrogen atoms worth of electronegativity. I'm comparing electronegativity values of 1 hydrogen compared to 1 carbon atom, and stating the reason why it is considered non-polar.