Question

unit 5 l test 2526
which of the following is true about elements and electronegativity?
they have the same electronegativity
na is more electronegative than ca
na is less electronegative than ca

Explanation:

• Electronegativity is the tendency of an atom to attract electrons.
• In the periodic table, electronegativity generally increases across a period and decreases down a group.
• Sodium (\(Na\)) is in period 3, group 1 and calcium (\(Ca\)) is in period 4, group 2.
• Since \(Na\) is above \(Ca\) in the periodic table (and considering the trends), \(Na\) has a higher electronegativity than \(Ca\).

Answer:

Na is more electronegative than Ca.