Question

Metallic Character The ability of an atom to donate electrons and form positive ion (cation) is known as electro positivity or metallic character. Down the group, metallic character increases due to increase in atomic size and across the period, from left to right electro positivity 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 electro negativity. The elements having high electro-negativity have a higher tendency to gain electrons and form anion. Down the group, electro negativity decreases due to increase in atomic size and across the period, from left to right electro negativity increases due to decrease in atomic size.I. Write the decreasing order of metallic character of Alkali metals plotted in the graph? II. Why Hydrogen is placed along with Alkali metals in the modern periodic table though it shows non-metallic character? III. Which element has highest electro negativity mentioned in the graph? IV. Identify the reason for the gradual change in electro negativity in halogens down the group.​

Answer 1

Answer:

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