In the reaction Mg+2HCl=MgCl₂+H₂↑, what element symbol represents magnesium? A. H B. Cl C. Mg D. O 相关知识点: 试题来源: 解析 C。在反应 Mg+2HCl=MgCl₂+H₂↑中,Mg 代表镁元素。选项 A 是氢元素符号;选项 B 是氯元素符号;选项 D 是氧元素符号。反馈 收藏 ...
Each element has its own unique electron configuration. Its electron configuration tells us where the most likely location to locate its electrons in the electron cloud. The components of an electron configuration tell us the distance the electron is from the nucleus, the shape of the orbital it...
An atom of an element has the following groundstate configuration: (Kr)4d^105s^25p^b. a. If the element is in Group 6A, what is the symbol of the element? b. What is b? What is the chemical symbol for the element mercury?
Ions are atoms that have different numbers of protons and electrons.Ionsindicated using a superscript after the element symbol that states whether thecharge on the atomis positive (more protons) or negative (more electrons), and the quantity of the charge. For example, Ca2+is the symbol for a...
A molecular formula describes which atoms are present in a molecule. The subscript number found after the elemental symbol indicates the number of atoms present for each element in the molecule. Answer and Explanation: The molecular formula of ammonium nitrate is NH4NO3. The molecular formula indicat...
are classified by the number of protons in the nucleus of the atom. However, there is no set rule for how many neutrons can be in the atom's nucleus. Because this number can vary, we classify the different, naturally occurring, variations of neutron quantities as isotopes of the element....
Nitrogen Uses and Properties - Nitrogen is a diatomic gas with atomic number 7 and symbol N. Know the nitrogen atomic number, the atomic mass of nitrogen and atomic weight of nitrogen. Explore the Uses of Nitrogen.
The potassium element is denoted by the symbol K. Iit is a silvery-white soft metal, waxy in nature and it can be cut with a knife easily. It has a low melting boiling point, lower density than water, and active chemical properties. Potassium is present in igneous rocks. Potassium is ...
The number of dots in the lewis symbol represents the number of valence electrons. The common valency of the element is either equal to the number of dots or 8 minus the number of dots. Ex : For carbon the valency is 4. But valency of nitrogen is 8-5=3
What is the element symbol for cobalt? What element has a mass number of 14? What element has a mass number of 65? What is the mass number of calcium? What does mass number represent? What is the atomic mass of carbon? What is the mass number of platinum?