Question

Which of the following statements is incorrect?

1.The compounds formed by the corresponding 3d transition metals in lower valence states are ionic but those in higher valence states are covalent

2.The 4d and 5d transition metals form less ionic compounds than the 3d transition metals

3.The compounds formed by the 3d transition metals are less ionic than the corresponding compounds formed by the 4d and 5d transition metals

4.The ionization energies of 3d,4d and 5d transition metals are greater than those of group 1 and 2 metals​

Answer 1

Explanation:

3 is incorrect

Ok thanks

Answer 2

Answer:

3rd option

Explanation:

Due to more effective nuclear charge (because of poor shielding effect of d and felectrons) the compounds of 4d and 5d metals are less ionic than those of 3d metals.