Question

answer the following questions about the reactivity of metals and nonmetals. be sure to explain your reasoning using the periodic table (groups, periods, and valence electrons). metals (reactivity trends) 1. arrange these metals in order of most reactive to least reactive: sodium (na), calcium (ca), potassium (k), aluminium (al). why did you put them in this order? which ones are in the same group? which are in the same period?

Explanation:

Step1: Recall metal reactivity trends

In the periodic table, metal reactivity increases down a group and decreases across a period from left - to - right. Alkali metals are more reactive than alkaline earth metals and transition metals.

Step2: Identify group and period positions

Potassium (K) and sodium (Na) are alkali metals. Potassium is in period 4 and group 1, sodium is in period 3 and group 1. Calcium (Ca) is an alkaline - earth metal in period 4 and group 2. Aluminium (Al) is a metal in period 3 and group 13.

Step3: Arrange by reactivity

Based on the reactivity trends, the order from most reactive to least reactive is: Potassium (K) > Sodium (Na) > Calcium (Ca) > Aluminium (Al).

Answer:

Potassium (K) > Sodium (Na) > Calcium (Ca) > Aluminium (Al)