Question

In an example of a chemical reaction, atoms of one element each lose an electron. Atoms of another element each gain an electron. What could be the two elements? (1 point)
Responses

a halogen and a noble gas

an alkali metal and a halogen

two halogens

two alkaline earth metals

Answer 1

The correct answer is **an alkali metal and a halogen**. In this type of reaction, alkali metals (which are found in Group 1 of the periodic table) lose one electron to form positive ions, while halogens (found in Group 17) gain an electron to form negative ions.