Mercury is a liquid metal because-it has a completely filled s-orbitalit has a completely filled d-orbital that causes d-d overlappingit has a completely filled d-orbital that prevents d-d overlapping of orbitalsit has a small atomic size

Question

Toppr Admin · Accepted Answer

Mercury is a liquid metal because it has a completely filled 6s orbital.
Mercury has a unique electronic configuration which makes the outer orbital close to the nucleus.
$H g_{80}$ : $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}, 4 s^{2} 3 d^{10} 4 p^{6}, 5 s^{2} 4 d^{10} 5 p^{6}, 6 s^{2} 4 f^{14} 5 d^{10}$

An f-shell poorly screens the nuclear charge that stbilizes the 6s orbital. Thus it is impossible to form any bond with other elements. So, mercury is unable to form bond like other solid metals and that's why it remains in liquid form.

Mercury is a liquid metal because:it has a completely filled s-orbitalit has a completely filled d-orbital that causes d−d overlappingit has a completely filled d-orbital that prevents d−d overlapping of orbitalsit has a small atomic size

Mercury is a liquid metal because:
it has a completely filled $s$ -orbital
it has a completely filled $d$ -orbital that causes $d - d$ overlapping
it has a completely filled $d$ -orbital that prevents $d - d$ overlapping of orbitals
it has a small atomic size