Question

determine which of the following has the lowest electronegativity. write out the full name. ta or cs

Explanation:

Step1: Recall electronegativity trend

Electronegativity increases across a period and decreases down a group in the periodic table. Cesium (Cs) is an alkali - metal and tantalum (Ta) is a transition metal. Cs is further to the left and lower in the periodic table compared to Ta.

Step2: Determine the element

Since Cs is more metallic and has a lower electronegativity based on periodic trends, Cs has the lower electronegativity.

Answer:

Cesium