  Macro-coherent atomic de-excitation involving a neutrino pair emission,
radiative emission of neutrino pair (RENP) $|e\rangle \rightarrow |g\rangle +
\gamma +\nu_i \nu_j$ (with $\gamma$ a photon and $\nu_i$ a neutrino mass
eigenstate), is a new experimental tool to determine undetermined neutrino
parameters such as the smallest neutrino mass and distinction of Majorana and
Dirac neutrinos. The best way to prove that the atomic RENP process accompanied
by unseen neutrino pair involves weak interaction is to measure parity
violating (PV) quantities. We quantitatively study how this is achieved. The
basic mechanism of how a favorable situation for PV may arise from the
fundamental electroweak theory (extended to incorporate finite neutrino masses)
is emphasized and calculation of dependence of PV observables on applied
magnetic field is worked out for heavy target atoms of alkaline earth like
level structure such as Sr, Yb, Hg, Xe. Numerically calculated parity violating
rates and asymmetry are presented for Yb $J=2 \rightarrow 0$ and $J=0
\rightarrow 0$ RENP.
