Ch.2 - Atoms & ElementsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution:
Fill in the gaps in the following table:
SymbolCo3+
Protons 347680
Neutrons 46116120
Electrons 36 78
Mass number59
Net charge 2+
Complete the sixth raw of the table.

Solution: Fill in the gaps in the following table:SymbolCo3+Protons347680Neutrons46116120Electrons3678Mass number59Net charge2+Complete the sixth raw of the table.

Problem
Fill in the gaps in the following table:


SymbolCo3+


Protons
347680
Neutrons
46116120
Electrons
36
78
Mass number59


Net charge

2+


Complete the sixth raw of the table.

Solution

We’re being asked to complete the sixth row of the table.


Recall that the symbol for an element or ion is as follows:




Recall that:


  • Atomic Mass = A number of protons + number of neutrons
  • Atomic NumberZ = number of protons = number of electrons
  • Net charge
    • number of electrons lost if positive (+)
    • number of electrons gained if negative (-)


For the 1st Column


The symbol is already given. 


Solution BlurView Complete Written Solution