Which element has an atomic number of 12? Which element has an atomic number of 1? Which element has atomic number 2? Which element has an atomic number of 8? Which element has atomic number 20? What is einsteinium? What element is a metal with 4 electrons in its outer shell?
百度试题 结果1 题目6 An atom of element Q contains 19 electrons, 19 protons and 20 neutrons.What is Q? B A calcium B potassium C strontium D yttrium 相关知识点: 试题来源: 解析 B 反馈 收藏
Which particle of an atom has the least mass? Which element has the highest atomic number? A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it? What is the smallest particle of an element?
The most active element of the group is Fluorine! Write the Lewis structure for O2 The composition of a compound contains only C, O, and Hatoms. What type of bond does the compound have? All NON-Metals so bonds must be COVALENT According to the periodic table, which twoelementsin each ...
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What element has a ground state electron configuration that contains five unpaired 5d electrons? An element in its ground state has the following electron configuration: (Ne)3s23p2. What is this element? An elemen...
Atoms: Atoms are the purest form of matter. They consist of protons, neutrons, and electrons. The periodic table lists all of the different types of atoms that are known to exist and are known as elements. Answer and Explanation: An atom that has more protons than electrons is called a ...
The same element can also vary in the number of electrons it has, creating ions. For example, sodium (Na) is a highly reactive element. Na can form an ionic bond with chlorine (Cl) where the sodium loses an electron -- becoming Na+ -- and gives it to the chlorine atom -- which ...
a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also ...
How would tendency to gain electrons change as you go down a group ? 04:12 Why do elements present in a group show similar characteristics after ... 03:00 Given below are some of the elements of first group Li, Na, K (Their... 03:12 An element has electronic configuration 2, 8, ...