What is true about valence electrons?
They are those electrons that are closest to the nucleus
They are those electrons that are neutrally charged
They are those electrons that are found in the nucleus
They are those electrons that are furthest from the nucleus
I don´t know what it means, please help.
it is
They are those electrons that are furthest from the nucleus
correct
they are the ones that participate in chemical bonding
Valence electrons are the electrons found in the outermost energy level or shell of an atom. They are the furthest electrons from the nucleus. These electrons play a crucial role in chemical bonding and determining the chemical properties of an element. The other options mentioned are not true about valence electrons.
Valence electrons are the electrons found in the outermost energy level or shell of an atom. They have the highest energy and are responsible for the atom's chemical behavior.
To determine the number of valence electrons in an atom, you need to know the electron configuration of that atom. The electron configuration describes how the electrons are distributed among the energy levels or orbitals around the nucleus.
The configuration is typically written using the format of numbers and letters. For example, the electron configuration of carbon is 1s² 2s² 2p².
In this configuration, we can see that carbon has 2 electrons in its first energy level (1s²), and then it has 4 additional electrons in its second energy level (2s² 2p²).
The valence electrons of an atom are determined by looking at the last energy level or shell. In the case of carbon, the last energy level is the second one (2s² 2p²), and it has 4 valence electrons.
So, to answer the question, the statement "They are those electrons that are furthest from the nucleus" is true about valence electrons. They are located in the outermost energy level or shell, farthest from the nucleus.