Question

Q5. Read the following and answer any four questions from 5 (i) to 5 (v). [1x44 Marks)
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 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.​

Answer 1

Answer:

7a+35

______ =

7

whoever will give first mark brainliest.

.7a+35

______ =

7

whoever will give first mark brainliest.

.7a+35

______ =

7

whoever will give first mark brainliest.

.

Answer 2

Answer:

Explanation:

(i) c) Cs>Rb>K>Na>Li

(ii) b) As Hydrogen can easily lose one electron like alkali metals to form positive ion

(iii) a) F

(iv) c) Electronegativity decreases down the group due to increase in atomic radius/ tendency to gain electron decreases.

(v) d) F and Li are in the same period and across the period atomic size/radius decreases from left to right.