In each of the following groups, which element is least reactive?
a. Group 1
b. Group 7
c. Group 2
d. Group 6
The electrons in the outermost shell of an atom are called valence electrons. These electrons are responsible for the chemical properties of an atom including its reactivity.
Answer and Explanation: 1
An atom tends to complete its octet (full valence shell) when forming a chemical bond with another atom. Electrons can be lost or gained or shared...
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fromChapter 2 / Lesson 17
Learn what inert gas is and see inert gas examples. Understand what noble gases are, why noble gases are inert, and the various properties of noble gases.