Which of the following s-block elements is most reactive?
Practice Questions
Q1
Which of the following s-block elements is most reactive?
Lithium
Sodium
Potassium
Rubidium
Questions & Step-by-Step Solutions
Which of the following s-block elements is most reactive?
Correct Answer: Rubidium
Step 1: Understand what s-block elements are. They are found in the first two columns of the periodic table, which includes groups 1 and 2.
Step 2: Identify the s-block elements. The main s-block elements include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and barium (Ba), among others.
Step 3: Know that reactivity in s-block elements increases as you move down the group. This is because the outermost electron is further from the nucleus and is more easily lost.
Step 4: Compare the elements listed. Among the alkali metals (group 1), rubidium (Rb) is lower down the group than lithium, sodium, and potassium, making it more reactive.
Step 5: Conclude that rubidium is the most reactive s-block element listed.
