百度试题 结果1 题目The atomic number of an element represents the number of ___. A. protons B. neutrons C. electrons D. protons and neutrons 相关知识点: 试题来源: 解析 A。元素的原子序数代表质子数(protons)。反馈 收藏
A. The number of protons B. The number of neutrons C. The number of electrons D. The sum of protons and neutrons 相关知识点: 试题来源: 解析 A。原子序数由质子数决定。选项 A 正确,原子序数等于质子数。选项 B 中子数不能决定原子序数。选项 C 电子数在原子呈电中性时等于质子数,但不是决定原...
1.how are the atomic numbers and the atomic masses of the elements related to how the elements are arranged on the periodic table?2.how does the number of electrons relate to the arrangement what is the different in the number of electrons in a 3rd period element and the 2nd period ...
The number of protons in an atom is referred to as the: a. mass number b. atomic mass c. atomic number d. charge Proton: Proton is a subatomic particle that lives inside the nucleus of an atom. It is positively charged and has a charge e...
The Atomic Number:The atomic number is the number of protons found in the nucleus of an atom. The atomic number is unique to the specific element. Every element have different atomic number. The periodic table is arranged by the atomic number....
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...
The number of in the nucleus of atoms is referred to as the atomic number.A.protonsB
The atomic number of an element is equal to the number of 02:08 Neutron was discovered by 00:56 Which of the following is a nucleon? 01:18 The mass number of a nucleus is equal to the number of 01:55 The nucleus of an atom is composed of 01:45 Nuclear forces exists between 03:...
For example, if carbon had a mass number of 12, then it would have 6 neutrons since: Mass Number - Atomic Number = Number of Neutrons 12 - 6 = 6 Or, more commonly, the number of neutrons plus the number of protons is equal ...
Atomic Structure:An atom is made up of three subatomic particles: protons, neutrons, and electrons. Inside the nucleus of an atom, the positively charged protons and the neutrally charged neutrons are found. Surrounding the nucleus are the negatively charged electrons. The b...