The reactivity of the alkali metals increases in the order?
A. Na, K, Li
B. K, Na, Li
C. Li, Na, K
D. Li, K, Na
As one goes down the table in sequence.
K,Na,Li
To determine the order of reactivity of alkali metals, you can look at their position in the periodic table. Alkali metals are located in Group 1 (IA) of the periodic table, which includes lithium (Li), sodium (Na), and potassium (K).
The reactivity of alkali metals generally increases as you move down the group from top to bottom. This means that the lower down the group an alkali metal is, the more reactive it tends to be.
From the given options, the correct order of increasing reactivity of the alkali metals is:
C. Li, Na, K
According to this order, lithium (Li) is the least reactive alkali metal, sodium (Na) is more reactive than lithium, and potassium (K) is the most reactive among the three.