What is the symbol for the isotope with 80 protons and a mass number of 202? How many neutrons does it have?Mass Number:The mass number of an atom represents the number of nucleons in the nucleus of an atom. Nucleons is a general term for p...
The atomic mass is equal to: A. the number of neutrons. B. the number of protons plus the number of electrons. C. the number of protons plus the number of neutrons. D. the number of electrons. E. the number of protons. How ...
百度试题 结果1 题目3 How many neutrons are present in the atom $$ _ { 2 1 } ^ { 4 5 } $$X? B A 21 B 24 C. 45 D 66 相关知识点: 试题来源: 解析 B 反馈 收藏
百度试题 结果1 题目37 How many neutrons are in a nucleus of the nuclide $$ _ { 1 7 } ^ { 3 7 } $$Cl? E A 17 B 20 C 37 D 54 相关知识点: 试题来源: 解析 B 反馈 收藏
How Many Neutrons and Protons Can Get Along? Maybe 7,000Clara Moskowitz, SPACE.com
decreases from 2MeV to 0.02535 eV, it corresponds to the velocity of 220 msec−1. At this velocity, the neutrons are in thermal equilibrium with the moderator. such neutrons are called thermal neutrons. Thermal neutrons cause further fission reaction. The essential characterstices of moderators ...
How many protons and neutrons are present in the following nuclei ? (i)126C(ii)5626Fe (iii)8838Sr(iv)23892U. View Solution How many electrons, protons and neutrons are there in a 6 gm of.6C12. View Solution select the point of isotones from the following nuclei.12Mg24,.1H3,.2He4...
百度试题 结果1 题目3 How many neutrons are present in the atom $$ _ { 2 1 } ^ { 4 5 } $$X? A 21 B 24 C 45 D 66 相关知识点: 试题来源: 解析 B 反馈 收藏
百度试题 结果1 题目5 How many neutrons are present in the atom $$ _ { 2 1 } ^ { 4 5 } $$X? A 21 B 24 C 45 D 66 相关知识点: 试题来源: 解析 B 反馈 收藏
How many protons and neutrons does oxygen-18 have? What is its mass number? The 57Fe atom has how many neutrons? How many neutrons are in the nucleus of an atom of Silver-107? How many neutrons are in the nucleus of an atom of u-235? How many protons and neutrons are in magnesium...