In the periodic table, K is the symbol for which element? What element has 6 valence shell electrons and 16 protons? Write about the element in the periodic table with atomic number 60. What is the name and symbol of the element that has an atomic number of 11 and 12 neutrons? How ma...
百度试题 结果1 题目What is the atomic number of an element?ps:Please answered in English 相关知识点: 试题来源: 解析 最佳答案译文,什么是元素的原子序数?It is the number of an element in thePeriodic table of the elements.反馈 收藏
What is the atomic number of the element present in the second period and group 15. View Solution The effective nuclear charge of an element with three valence electrons is 2.60. What is the minimum atomic number of the element? View Solution ...
Which element has an atomic number of 76? Which element has the atomic number 9? Which element has an atomic number of 1? Which element has an atomic number of 79? Which element has atomic number 2? Which element has an atomic number of 15? Which element has an atomic number of 12?
The chemical element with atomic number 20 is calcium. What is the abbreviation for calcium? A. Ca B. Cy C. Cg D. Ch 相关知识点: 试题来源: 解析 A。钙元素的英文是 calcium,其缩写形式是 Ca。选项 B“Cy”不是钙元素的缩写;选项 C“Cg”一般不是任何化学元素的缩写;选项 D“Ch”一般不是...
Every element has a unique atomic number. This is the number of protons in the nucleus of each atom. What is the atomic number of this helium atom? A neutral atom must have equal numbers of protons and electrons, so the atomic number of an element also gives the number of electrons. He...
The chemical element with atomic number 15 is phosphorus. What is the abbreviation for phosphorus? A. P B. Ph C. Po D. Py 相关知识点: 试题来源: 解析 A。磷元素的英文是 phosphorus,其缩写形式是 P。选项 B“Ph”一般不是磷元素的缩写;选项 C“Po”是钋元素的缩写;选项 D“Py”不是磷元素...
and neutrons are found in the nucleus of the atom, while the electrons are outside the nucleus. The atomic number is the number of protons, while the mass number is the number of protons and neutrons. If an element is not charged, the number of electrons will equal the number of ...
itself in a covalent bond. It depends upon the nuclear charge and the atomic size. The higher the electronegativity, the higher is the tendency of an atom to attract electrons. In this definition, fluorine is the most electronegative element while francium is the least electronegative element. ...
The atomic number (原子序数) is equal to the number of electrons per atom or, what is equivalent, the number of protons (质子) per nucleus.相关知识点: 阅读 文言文阅读 文言题类 文言文阅读——翻译 试题来源: 解析 [答案]原子序数等于每个原子的电子数或者相当于每个原子核的质子数。反馈...