Question

(a) Be and Mg are alkaline earth metal
(b) K+ have larger radii than Ca²+
(c) All d-block elements are transition elements
(d) H- ion have larger size than F-
Incorrect statements is/are
(1) (a), (c) & (d)
(2) (b) & (c)
(3) (a) & (d)
(4) (a) & (c)​

Answer 1

The incorrect statement is c.

• Be and Mg both are alkaline earth metal.
• Potassium ion have larger size than calcium ion because calcium release its two electrons and nucleus strongly attracts the electrons.
• All d block elements are not transition elements.
• H- ion have larger size than F- ion.