Ge (Z=32)in its ground state electronic configuration has $x$ completely filled orbitals with $m_l=0$ (Magnetic quantum number equals to 0). The value of $x$ is _______.

${ }_{32}\left[Ge\right]1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^2$

$m_l=0,-1,+1m_l=-1,0,+1-2,-1,0,1,2$

$m_l=0\Rightarrow s-$orbital and one p-orbital out of three in subshell, one d-orbital.