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
aAn atom containing 34 protons, 43 neutrons, and 34 electrons would have what symbol? 包含34个氢核、43个中子和34个电子的原子将有什么标志?[translate] adetermin determin[translate] aThe wheat was cut three days ago. 麦子被切了三天前。[translate] ...
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23
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. ...
For example, the mass number of a carbon atom with 6 protons and 6 neutrons in its nucleus is 12. Isotopes Although all atoms of an element have the same number of protons in their nuclei, they may not all have the same number of neutrons. Atoms of an element with the same mass ...
An element is a type of atom, and atoms typically have three components: positive protons, neutral neutrons, and negative electrons. What is the element definition in chemistry? An element is a substance made up of only one type of atom, all with the same number of protons. Gold offers a...
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?
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
Thefluorineelement is a chemical species that has a total of nine protons and ten neutrons in its nucleus.Protonsare positively charged entities whileneutronsare neutrally charged entities; both of which are condensed together in the center of the atom to form a nucleus. Theatomic massis the mas...
What element has 81 protons? What element has 26 protons? What chemical element has 4 protons? Which element has 27 protons? Which element has 3 protons? What element has 6 protons, 8 neutrons, and six electrons? What element has 4 protons 5 neutrons and 2 electrons? Which element has 16...