Which of the following statements is not correct? (A) TiCl4 is a colourless compound.
(B) (Cr(NH3)c)]Cl3 is a coloured compound.
(C) K3[VF] is a colourless compound.
(D) [Cu(NCCH3)4][BF4] is a colourless compound.

Can someone me with questions 15 to 17 plz.

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.