A. the number of protons in an atom B. the number of neutrons in an atom C. the number of electrons in an atom D. the total number of particles in an atom 相关知识点: 试题来源: 解析 A。元素的原子序数告诉我们一个原子中的质子数。原子序数等于质子数,选项 B 中子数不能由原子序数确定...
The number of protons in an atom equals the number of electrons. This is necessary to balance the charge of an atom, and to increase its stability... See full answer below.Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our exp...
31. In every atom in its normal state, the number of protons equals the number of electrons, something which is directly related to the electrical properties of the proton and the electron. 相关知识点: 试题来源: 解析 【答案】在每个原子的正常状态下,质子的数量等于电子的数量,这与质子和 电...
1. The Elements and The Periodic Table(元素和周期表) The number of protons in the nucleus of an atom is referred to as the atomic number, or proton number, Z. The numbers of electrons in an electrically neutral atom is also equal to the atomic number, Z. The total mass of an atom ...
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
Atoms – Nucleus (3) Atomic Mass Unit (amu) – Unit used to measure the relative masses of subatomic particles; A proton has a mass of 1 amu. (4) Atomic Number – Indicates the number of protons found in the nucleus of an atom. Atoms – Nucleus Neutrons – Neutral charge (1) ...
Atomic Number (number of protons in the nucleus): 79 Atomic Symbol (on the Periodic Table of Elements): Au Atomic Weight (average mass of the atom): 196.9665 Density: 19.3 grams per cubic centimeter Phase at Room Temperature: Solid Melting Point: 1,947.7 degrees Fahrenheit (1,064.18 degrees...
Because their charges are equal, and because the other co-inhabitant of the atomic nucleus, the neutron, is neutral, then so long as the number of protons and electrons are equal then their charges cancel out and atoms are electrically neutral. Remove an electron from around an atom, ...
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23
Atomic number (number of protons in the nucleus): 29 Atomic symbol (on the periodic table of elements): Cu Atomic weight (average mass of the atom): 63.55 Density: 8.92 grams per cubic centimeter Phase at room temperature: solid Melting point: 1,984.32 degrees Fahrenheit (1,084.62 degrees ...