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
Which element has the same number of valence electrons as phosphorus? Which element will most likely gain electrons? a. Cl b. Na c. Ne Why? What is an atom that has more protons than electrons? What element has 10 electrons? What element has 13 electrons?
The number of protons determines the element of the atom, while the number of neutrons can vary (resulting in different isotopes of the same element). Electrons exist in energy levels or shells around the nucleus, and each shell can hold a specific number of electrons. Example of an atom: ...
What element has 13 electrons? What is the number of electrons in each energy level for the element, H? What is the electron configuration of an element with atomic number 15? Which group of elements has the lowest ionization energy? The elements of which group are no...
Has a -1 charge 3. Has a mass about the same as that of a proton 4. Is att The nucleus of an atom consists of which particles? Name three subatomic particles found in the atom of an element. If an atom has 17 electrons, 20 neutrons, and 19 ...
Which element is most likely to accept electrons? Thus,nonmetalshave a higher electron affinity than metals, meaning they are more likely to gain electrons than atoms with a lower electron affinity. For example, nonmetals like the elements in the halogens series in Group 17 have a higher elec...
Tin is the 49th most abundant element on Earth and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table, thanks to its magic number of protons. It has two main allotropes: at room temperature, the stable allotrope is β-tin, a silvery-white, ...
Hint: Each of the ions has a different number of protons, but each has one electron, so the Bohr model How many electrons in an atom can have each of the following quantum number or sub level designations? n=4, l=3A certain element has its outermost el...
Smoking article with dual burn rate fuel element The present invention preferably relates to a smoking article which is capable of producing substantial quantities of aerosol, both initially and over the useful life of the product, without significant thermal degradation of the aerosol... White Jackie...
Select the correct answer. Which of the following elements makes up the majority of Earth's atmosphere? a. Oxygen b. Hydrogen c. Argon d. Nitrogen Elements in the atmosphere Although the Earth's atmosphere contains a lot of nitroge...