The given reaction violate one or more conservation laws. Identify the law that is violated.

${\mu }^{-}\to e^{+}+\gamma$

The given reaction violates one or more conservation laws. Identify the law that is violated.

${\tau }^{+}\to \gamma +{\overline{\nu }}_{\tau }$

The given reaction violates one or more conservation laws. Identify the law that is violated.

$p+n\to p^0+p$

The given reaction violates one or more conservation laws. Identify the law that is violated.

$e^{+}\to {\mu }^{+}+{\overline{v}}_{\mu }+\overline{v_e}$

The given reaction violates one or more conservation laws. Identify the law that is violated.

$p\to {\mathrm{\pi }}^{+}+{\mathrm{\pi }}^{-}$