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 two halogens two halogens an alkali metal and a halogen an alkali metal and a halogen a halogen and a noble gas a halogen and a noble gas two alkaline earth metals two alkaline earth metals

Answer 1

The correct response is an alkali metal and a halogen.

In this type of chemical reaction, alkali metals (which are found in Group 1 of the periodic table) typically lose one electron to form positive ions, while halogens (found in Group 17) tend to gain an electron to form negative ions, resulting in the formation of ionic compounds. For example, sodium (an alkali metal) can lose an electron to become Na⁺, while chlorine (a halogen) can gain an electron to become Cl⁻, resulting in sodium chloride (NaCl).