Question

Which element in period 4 has the highest electronegativity? potassium calcium copper bromine

Answer 1

The answer would be bromine because electronegativity increases as you move up and to the right on the periodic table, and if you keep moving right you will see that bromine has the highest electronegativity out of those four elements.

Answer 2

Answer: Bromine has the highest electronegativity in period 4 of the periodic table.

Explanation:

Electronegativity is defined as the tendency of an atom to attract the shared pair of electrons towards itself whenever a bond is formed.

This property of an atom increases as we move from left to right in a period because the number of charge on the nucleus gets increased.

But this property decreases as we move from top to bottom in a group because electrons get add up in the new shells which make them further far away from the nucleus.

For the given options:

Potassium is present in Group 1, Period 4 of the periodic table.

Calcium is present in Group 2, Period 4 of the periodic table.

Copper is present in Group 11, Period 4 of the periodic table.

Bromine is present in Group 17, Period 4 of the periodic table.

Hence, bromine will have the highest electronegativity in Period 4.