A tin chloride Q undergoes the following reactions (not balanced)
`Q+Cl^(-)toX`
`Q+Me_(3)NtoY`
`Q+CuCl_(2)toZ+CuCl`
X is a monoanion having pyramidal geometry. Both Y and Z are neutral compounds. Choose the correct options(s) :

Options

A. The central atom in X is sp hybridized.
B. There is a coordinate bond in Y.
C. The oxidation state of the central atom in Z is +2.
D. The central atom in Z has one lone pair of electrons.

Answer

A, B

Explanation

Sn can exist in +2 or +4 oxidation state. So, Q in the given reactions can be `SnCl_2 or SnCI_4.` Since X is monoanion having trigonal pyramidal geometry `(sp^3" with one lone pair as per VSEPR"),` so Q is `SnCl_2,` and the first reaction is `underset((Q))(SnCl_(2))+Cl^(-) to underset(X)([SnCl_3])^-`

The second reaction is Stephen.s reaction, where nitrile is converted to aldehyde via formation of iminium salt.
`underset((Q))(SnCl_(2))+(CH_(3))_(3)N to Cl_(2)Sn. underset(Y)(N(CH_(3))_(3))`
There is a coordinate bond in the `Cl_(2)Sn. N(CH_(3))_(3)`
`underset((Q))(SnCl_(2))+2CuCl_2 to underset((Z))(SnCl_4)+2CuCl`