What is sodium in the periodic table?Common but Vital:Sodium is a common element that is found in every living organisms as well as in many of the rocks on Earth and in the ocean. It is a very soft metal and highly reactive, meaning it forms compounds with many of the other elements...
What is the group number in the periodic table of X, a representative element, in each of the following ionic compounds. 1. X2O3 2. X2SO3 3. Na3X Representative elements: Representative elements involve the filling of s an...
百度试题 结果1 题目25 Selenium, Se, is in the same group of the Periodic Table as sulfur, S What is the formula of sodium selenide? A ANa2Se BNaSeO C Na2SeO D Na SeO: 相关知识点: 试题来源: 解析 A 反馈 收藏
Sodium is an alkali metal. It holds its place in the periodic table as the first element of the 3rd period. It is the eleventh element in the periodic table. Therefore,The atomic number of Sodium = 11,Number of neutrons in the nucleus of the Sodium ion...
<p><strong>Step-by-Step Solution:</strong></p><p>1. <strong>Definition of Groups in the Modern Periodic Table</strong>: - Groups are the vertical columns in the Modern Periodic Table. Each group contains elements that share similar chemical properties
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.
(nh 4 + ), plants absorb nitrogen from the soil. nitrate is typically the predominant type of absorbed nitrogen available in aerobic soils where nitrification can occur. related elements hydrogen nickel neon potassium helium copper sodium calcium lithium zinc magnesium scandium beryllium gallium ...
When sodium sulphate is dissolved in water, why doesn't it release the ions Na^+, S_2^- and O_2^- ? What property results from the sulfhydryl group in a protein structure? What are the characteristics of experimental research? Why does the electronegativity decrease from top to bottom as...
Which elements in the periodic table are referred to alkali metals? Which element is a metalloid? (a) iron (b) silicon (c) sodium (d) cadmium. What are the characteristics of metalloids? On the periodic table, what are elements from the 7A(17) group called?
Element number 17 in the periodic table, chlorine is one of a group of elements that share similar chemical properties known as the halogens, with the other members being fluorine, bromine, iodine and astatine. The gas dissolves in water, forming a mixture of hypochlorous and hydrochloric acids...