Question

4 identify the element with the least electronegativity
a zinc (zn)
b calcium (ca)
c gallium (ga)
d copper (cu)

Explanation:

Electronegativity generally increases across a period and decreases down a group. Calcium (Ca) is in Group 2, while Zinc (Zn) is in Group 12, Gallium (Ga) in Group 13, and Copper (Cu) in Group 11. As we move from left to right across a period, electronegativity increases. Calcium is the left - most among these elements in the periodic table.

Answer:

B. Calcium (Ca)