Calculate the electronic polarizability of an argon atom whose ɛr = 1.0024 at NTP and N = 2.7×1025 atoms/m3.

• A. 0.0024 Fm2
• B. 7.87 ×10-40 Fm2
• C. 7.87 Fm2
• D. 1.0024×10-40 Fm2