Question

Which element in the list is the most reactive?

C

Ba

S

Cs

Answer 1

Cesium (Cs) is the most reactive element in the list.

Step-by-step explanation:

The most reactive element in the list is cesium (Cs).

Answer 2

Cs

Step-by-step explanation:

This element is the farthest right, and lowest meaning that the reactivity of it is very high.

1. valence electrons and electronegativity

2. Both reactivity and electronegativity decrease down a group.

3. Electronegativity decreases down a group, and reactivity increases down a group.

4. The number of valence electrons increases from left to right.

5. Cs

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