The moisture present in ammonia can be removed by using which of the following?

Which one of the following statements is not correct regarding phosphine?

The electronegativity of a group $13$ element '$E$' is the same as that of $Ge$ (on the Pauling scale and up to one decimal point). The $CORRECT$ statements about $E^{3+}$ are:
$A$. It can act as a reducing agent.
$B$. It can act as an oxidizing agent.
$C$. $E^{3+}$ is more stable than $E^+$.
$D$. The standard electrode potential value for $E^{3+}/E$ is positive.

Discuss the trends in chemical reactivity of group $15$ elements.

The structural formula of hypophosphorus acid is

The molecular formula of an acid of phosphorus is $H_3PO_2$. What are its name and basicity,respectively?