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
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
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?
9.Two very important elements in our lives on earth are carbon and nitrogen, and we would also need them on Libra. 10.Every time we add one or more protons and enough neutrons to keep the nucleus together, we make a new chemical element. ...
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23
Each known chemical element listed on the periodic table of elements has an atomic number. The atomic number is equal to the number of protons that are present in one atom of that element.Answer and Explanation: Become a Study.com member to unlock this answer! Create your account View ...
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, ...
A chemical element refers to a type of atom characterized by a specific number of protons in its nucleus. All atoms of the same element will have the same number of protons, but they might vary in their number of neutrons or electrons without changing elements. ...