2023年11月21日 · Main group elements are the elements located in eight specific columns on the periodic table. Elements found in column numbers, or groups , 1, 2, and 13 through 18 all are classified as main group ...

2023年11月21日 · The representative elements are also named main group elements, s, and p block elements. The latter is because the s orbital and the p orbital of the energy levels get filled in their atoms.

To learn more about the traits of different element groups, review the accompanying lesson on Transition Metals vs Main-Group Elements: Properties and Differences. This lesson covers the following ...

2018年8月9日 · Refer to the explanation. For the main group (representative) elements, the valence electrons are the outermost (highest energy) "s" and "p" electrons, which make up the valence shell. The valence electrons participate in chemical reactions. The main group elements are the A groups, or groups 1,2,13-18. The core electrons are in the inner shells and do not …

Main-Group Elements: Elements in groups 1, 2, and 13-18. These are alkali metals in group one, alkaline earth metals in group 2, and non-metals in groups 13-18. Cation: A positive ion.

2017年8月30日 · Look at the Group number, and decide whether the atom is a metal or a non-metal..... The Group number represents the number of valence electrons. And thus the alkali metals have the ONE valence electron, and the alkaline earths have TWO valence electrons. And typically, they lose these electrons upon reaction to give M^+ and M^(2+) ions.

What characteristic is the same for all the main group elements in a given period? What characteristic is the same for all the main group elements in a group? Explain the difference between 2nd and 3rd of group transition element with the 1st group. What are transition metals and their properties?

2017年11月23日 · Outlined below, but beware of atomic radii trend. a. atomic radii Increases down a group (top to bottom). Decreases across a period (left to right). b. first ionization energy Increases across a period (left to right). Decreases down a group. c. electron affinity Increases across a period. Decreases down a group. d. ionic radii Increases down a group. Decreases …

Which of the following elements are main-group elements? a. Te b. K c. V d. Re e. Ag; A substance is a good conductor of electricity. Which of the following best explains the probable position of the substance in the periodic table? - It is between groups 1 to 12 because it is a metal. - It is between groups 13 to 18 because it is a meta

The main group elements have distinct and specific trends in number of valence electrons, which leads to an overall predictability when it comes to chemical bonding (something that will come in ...