Highschool Review

Question 1

atomic number

Answer 1

• identity of a chemical element determined by number of proton in its nucleus
• located at top of element box

Question 2

mass number

Answer 2

• total number of protons and neutrons in an atom

- located at bottom of element box

Question 3

isotopes

Answer 3

• elements that have the same number of protons, but differ in their mass number (more or less neutrons)

Question 4

s-block of the periodic table

Answer 4

• column 1-2

Question 5

d-block of the periodic table

Answer 5

• column 3-12

Question 6

p-block of periodic table

Answer 6

• column 13-18

Question 7

f-block of periodic table

Answer 7

• last 2 rows of extended periodic table

Question 8

names of groups in the periodic table

Answer 8

• C1: Alkali Metals
• C2: Alkaline Earth Metals
• C15: Pinctogens
• C16: Chalcogens
• C17: Halogens
• C18: Noble Gases
• R*: Lanthanides
• R#: Actinides

Question 9

valence electrons

Answer 9

• electrons in the s and p sub-shells of the occupied electronic shell with the largest n for the neutral element

Question 10

valence electrons in the p-block

Answer 10

• group number minus 10

Question 11

valence electrons in the s-block

Answer 11

• same as the group number

Question 12

procedure for writing chemical formula of salts

Answer 12

1. write the symbols and charges for the cation and ion
2. balance the overall charge by examining the charges
3. check the charge balance