百度试题 结果1 题目6 An atom of element Q contains 19 electrons, 19 protons and 20 neutrons.What is Q? B A calcium B potassium C strontium D yttrium 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10 An isotope of element Y has 19 protons and 20 neutrons in its nucleus. Which is the symbol for the ion of Y? B2039A YB19192039C YD1919 相关知识点: 试题来源: 解析 B 反馈 收藏
The discovery of the element nobelium is controversial, with teams in Sweden, Russia, and the United States of America all claiming credit. All isotopes of nobelium have 102 protons in the nuclei of their atoms. Answer and Explanation:1 ...
Describe the structure of an atom.An atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines
A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it? What is the smallest particle of an element? If an atom with a mass number of 202 has 122 neutrons, it is an atom of which element?
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23
The neon element symbol is Ne. It has the atomic number 10. So, in the neon atom, the number of protons and electrons is 10 each. The mass number of neon is 20 amu. So, the number of neutrons in the neon atom is 10.View Video Only Save Timeline Video Quiz Course 25K ...
Main articles: Isotope and Stable isotope Isotopes are atoms of the same element (that is, with the same number of protons in their atomic nucleus), but having different numbers of neutrons. Most (66 of 94) naturally occurring elements have more than one stable isotope. Thus, for example, ...
2 Atoms with the same number of protons but different numbers of neutrons are called isotopes. U234 has 92 protons and 142 neutrons (and its mass number is 92+142=234), whereas U235 and U238 have 143 and 146 neutrons, respectively. 3 United States Nuclear Regulatory Com...
In chemistry, how can one tell if an element is able to be paired with another element? Are there any elements in neutron stars, and if so what are they? How do you show the number of protons and neutrons on a Bohr-Rutherford diagram?