일반화학 5판 솔루션 자유 Chapter2
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작성일 19-06-20 01:49
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일반 화학 ,5판 자유챕터2 , 일반화학 5판 솔루션 자유 Chapter2화학솔루션 , 일반화학 5판 자유
설명
chapter 2
atoms, molecules, and ions
2.7 First, convert 1 cm to picometers.
2.8 Note that you are given information to set up the unit factor relating meters and miles.
2.11 For iron, the atomic number Z is 26. Therefore the mass number A is:
A ? 26 ? 28 ? 54
2.12 Strategy: The 239 in Pu-239 is the mass number. The mass number (A) is the total number of neutrons and protons present in the nucleus of an atom of an element. You can look up the atomic number (number of protons) on the periodic table.
Solution:
mass number ? number of protons ? number of neutrons
number of neutrons ? mass number ( number of protons ? 239 ( 94 ? 145
2.13 Isotope
No. Protons 2 2 12 12 22 35 78
No. Neutrons 1 2 12 13 26 44 117
2.14 Isotope
No. Protons 7 16 29 38 56 74 80
No. Neutrons 8 17 34 46 74 112 122
No. Electrons 7 16 29 38 56 74 80
2.15 (a) (b)
2.16 The accepted way to denote the atomic nu
솔루션/화학
일반 화학 ,5판 자유
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일반화학,5판,자유,화학,솔루션
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일반화학 5판 솔루션 자유 Chapter2
다.
