Question

15. The statement which is Not correct is ⎯ a) In a period the halogen is the most electronegative element
b) In a period the noble gas has the highest first ionization energy
c) In a period the alkali metal is the most oxidizing species
d) Atomic radius decreases as we go from left to right across the second period .​

Answer 1

Answer:

c) In a period the alkali metal is the most oxidizing species

Explanation:

Alkali metals are the best reducing agents

Answer 2

The statement which is not correct is c) In a period the alkali metal is the most oxidizing species

• Alkali metals are not the strongest oxidising agents instead they are strong reducing agents. Since the metals don't have the strong attraction of valence electrons, they lose electrons easily. This is the reason why they are highly reducing. Hence, statement c is incorrect.
• Halogen atoms are electronegative because of their highly effective nuclear charge. Hence, statement a is correct.
• In a period the noble gas has the highest first ionization energy as they are stable structures. Hence, statement b is also correct.
• Atomic radius decreases as we go from left to right across the second period because valence electrons keep adding and feel stronger attraction towards the nucleus.