Question

In the Modern Periodic Table, a zig-zag line separates metals from non-metals. Metals tend to lose electrons while forming bonds, that is, they are electropositive in nature. Down the group, the effective nuclear charge experienced by valence electrons is decreasing because the outermost electrons are farther away from the nucleus. Therefore, these can be lost easily. Non-metals, on the other hand, are electronegative. They tend to form bonds by gaining electrons.

1. How does metallic character changes across a period?

a. decreases

b. increases

c. remains same

d. varies randomly

2. From the above image, which has the highest metallic character?

a. K

b. Li

c. Cs

d. Rb

3. How does metallic character change down a group?

a. decreases

b. increases

c. remains same

d. varies randomly

4. How does non metallic character changes down a group?

a. remains same

b. varies randomly

c. decreases

d. increases

5. From the above image, which has the highest electronegativity?

a. F

b. Cl

c. Br

d. I

Comments

ok........

Answer 1

1 (a) Metallic character decreases as you move left to right across a period in the periodic table.

2 (c) Li < K < Rb < Cs

3 (b) The metallic character increases down a group.

4 (c) Non - metallic character decreases due to increase in the atomic size.

5 (a)  Fluorine is the most reactive in the halogens.

Hope you found it helpful

Answer 2

1. a. decreases

2. c. Cs

3. b. increases

4. c. decreases

5. a. F