Question

Question:18
Read the following and answer THE question.

Metallic Character

The ability of an atom to donate electrons and form positive ion (cation) is known as electropositivity or metallic character. Down the group, metallic character increases due to increase in atomic size and across the period, from left to right electropositivity decreases due to decrease in atomic size.

Non-Metallic Character

The ability of an atom to accept electrons to form a negative ion (anion) is called non-metallic character or electronegativity. The elements having high electro-negativity have a higher tendency to gain electrons and form anion. Down the group, electronegativity decreases due to increase in atomic size and across the period, from left to right electronegativity increases due to decrease in atomic size.

Ques,Which of the following correctly represents the decreasing order of metallic character of Alkali metals plotted in the graph?


Cs>Rb>Li>Na>K


K>Rb>Li>Na>Cs


Cs>Rb>K>Na>Li


Cs>K>Rb>Na>Li​

Answer 1

Answer:

Answer is c. Cs>Rb>K>Na>Li

because Li has more Covalent character and Cs has more ionic or metallic character.