Topic 3 - Periodicity

Question 1

Which are the transition elements?

Answer 1

• groups 3 -11

Question 2

Which are the s-block elements?

Answer 2

• groups 1 and 2

- including He

Question 3

Which are the p-block elements?

Answer 3

• groups 13 - 18

- excluding He

Question 4

Which are the d-block elements?

Answer 4

• groups 3 - 12

Question 5

Which are the f-block elements?

Answer 5

• lanthanoids and actinoides

Question 6

What is periodicity?

Answer 6

• the repeating pattern of physical and chemical properties shown by periods

Question 7

What is the trend in atomic radius (on the periodic table)?

Answer 7

• down a group: increases

- across a period: decreases

Question 8

What is the trend in ionic radius (on the periodic table)?

Answer 8

• down a group: increases

- across a period: decreases

Question 9

What is the trend in ionisation energy (on the periodic table)?

Answer 9

• down a group: decreases

- across a period: increases

Question 10

What is the trend in electronegativity (on the periodic table)?

Answer 10

• down a group: decreases

- across a period: increases

Question 11

What is the trend in electron affinity (on the periodic table)?

Answer 11

• down a group: varies

- across a period: increases

Question 12

What is the trend in melting point (on the periodic table)?

Answer 12

• down a group: depends

- across a period:

Question 13

What is the trend in metallic character (on the periodic table)?

Answer 13

• down a group: increases

- across a period: decreases

Question 14

What is the atomic radius?

Answer 14

• the distance from the nucleus to the outermost electron in orbit

Question 15

What is the ionic radius?

Answer 15

• check

Question 16

What is ionisation energy?

Answer 16

• the minimum amount of energy required to remove one electron from an atom in its gaseous state

Question 17

What is electron affinity?

Answer 17

• the energy change when 1 mol of electrons is added to 1 mol of isolated atoms in gaseous phase

Question 18

What is electronegativity?

Answer 18

• the relative attraction that an atom has for a shared pair of electrons when it is covalently bonded to another atom

Question 19

What is the melting point?

Answer 19

• the amount of energy required to break a bond(s) to change the solid phase of a substance to a liquid