Xe and F2 in a 1:1 molar ratio, when mixed in a closed flask and kept in sunlight for a day, gave white crystals of a compound Q. Two equivalents of Q on reaction with one equivalent of AsF5 gave an ionic compound [X]+[Y]-. The total number of lone pairs present on the cation X+ is:

Consider the following statements about SnCl4 and SnMe4: A. SnCl4 forms [SnCl6]2-. B. SnMe4 does not form [SnMe6]2-. C. SnCl4 does not undergo hydrolysis. D. SnMe4 readily hydrolyzes. The correct statements are:

The number of shared corners of the constituent SiO4 units in orthosilicate, pyrosilicate, cyclic silicate, and sheet silicate, respectively, are: