Valence Electrons | Definition, Role & Examples from Chapter 3 / Lesson 3 406K Learn about valence electrons and how to find the number of valence electrons on the periodic table. Discover the role of a valence electron in an atom. Related...
Learn about the alkali metals group and explore the group 1A elements. Understand their charge, valence electrons, ions, and find out whether they are soft or hard. Related to this QuestionHow many protons does cesium have? What is the atomic number of rubidium? What is the atomic number of...
The charge number determines what type of charge an individual atom will have if it gains or loses electrons during an ionic chemical reaction. For example, sodium loses one electron when it reacts with chlorine; chlorine gains one electron. Their respective charges are 1+ and 1-. In their...
Write the name and symbol for the alkali metals. Use the periodic table to give the name and symbol for each of the following elements: (a) the halogen in the same period as the alkali metal with 11 protons (b) the alkaline earth metal in the s...
temperatures. The free electrons at the hotter end of the conductor gets higher thermal velocity than the colder end of the wire and these higher thermal velocity electrons diffuse to the cold end of the conductor producing a potential difference across the conductor. This effect is known as ...
Name two alkali metals in the periodic table. Give their full names and their chemical symbols. The elements of the periodic table are put in order of which of the following? a. electrons b. atomic mass c. atomic number d. neutrons For given symbols...
The placement of electrons in an atom is not random. They have distinct energy levels that are one-of-a-kind for each electron at any given time. The electronic configuration is the distribution of electrons in certain energy levels.Answer...
Valence electrons are the electrons located in the outermost energy level (furthest from the nucleus). Metals tend to lose their valence electrons to form cations, while nonmetals tend to gain electrons to complete their valence energy levels....