Which of the following s-block elements is least reactive?
Practice Questions
Q1
Which of the following s-block elements is least reactive?
Lithium
Sodium
Potassium
Rubidium
Questions & Step-by-Step Solutions
Which of the following s-block elements is least reactive?
Correct Answer: Lithium
Step 1: Understand what s-block elements are. They are found in the first two groups of the periodic table, which include alkali metals and alkaline earth metals.
Step 2: Identify the alkali metals in the s-block. These are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Step 3: Know that reactivity increases as you move down the group in alkali metals. This means that lithium, being at the top, is less reactive than the others.
Step 4: Conclude that among the alkali metals, lithium is the least reactive.
