Before the element scandium was discovered in 1879, it was known as “eka-boron.” Predict the properties of scandium from averages of the corresponding properties of its neighboring elements in the periodic table. Compare your predictions with the observed values in Appendix F.
Interpretation:
The properties of scandium should be determined from the averages of the properties of neighbouring elements in the periodic table and predictions should be compared with the observed values in Appendix F.
Concept introduction:
The periodic table contains periods and groups. There are 18 groups and 7 periods in the periodic table. The vertical columns are known as groups and horizontal rows are known as periods.
The numbering of periods is done as 1 to 7 from top to bottom and groups are named as 1A, 2A, 3B to 8B, 1B, 2B, 3A to 8A from left to right where A represents representative elements and B represents transition elements. Elements in the same family have similar chemical and physical properties. In the periodic table, elements are classified as metals, non-metals or metalloids.
Answer to Problem 1P
Calculated values of Scandium are:
Melting point = 1250oC
Boiling point = 2386oC
Density = 3.02 g/cm3
The observed values and calculated values are nearer.
Explanation of Solution
Given information:
Scandium belongs to group 3 and period 4.The electronic configuration of scandium is:
Melting point is calculated as =
= 1249.5oC
Boiling point is calculated as =
= 2386oC
Density is calculated as =
=
Now, from Appendix F:
Melting point of scandium = 1541oC
Boiling point of scandium = 2386oC
Density of scandium = 2.99 g/cm3
According to the calculated value and observed values, the physical properties are nearer but not exactly the same.
Want to see more full solutions like this?
Chapter 3 Solutions
OWLv2 for Oxtoby/Gillis/Butler's Principles of Modern Chemistry, 8th Edition, [Instant Access], 1 term (6 months)
- In three dimensions, explain the concept of the velocity distribution function of particles within the kinetic theory of gases.arrow_forwardIn the kinetic theory of gases, explain the concept of the velocity distribution function of particles in space.arrow_forwardIn the kinetic theory of gases, explain the concept of the velocity distribution function of particles.arrow_forward
- Hi!! Please provide a solution that is handwritten. this is an inorganic chemistry question please answer accordindly!! its just one question with parts JUST ONE QUESTION with its parts spread out till part (g), please answer EACH part till the end and dont just provide wordy explanations wherever asked for structures, please DRAW DRAW them on a paper and post clearly!! answer the full question with all calculations step by step EACH PART CLEARLY please thanks!! im reposting this please solve all parts and drawit not just word explanations!!arrow_forwardHi!! Please provide a solution that is handwritten. this is an inorganic chemistry question please answer accordindly!! its just one question with parts JUST ONE QUESTION, please answer EACH part PART A AND PART B!!!!! till the end and dont just provide wordy explanations wherever asked for structures, please DRAW DRAW them on a paper and post clearly!! answer the full question with all details EACH PART CLEARLY please thanks!! im reposting this please solve all parts and drawit not just word explanations!!arrow_forwardHi!! Please provide a solution that is handwritten. this is an inorganic chemistry question please answer accordindly!! its just one question with parts JUST ONE QUESTION, please answer EACH part till the end and dont just provide wordy explanations wherever asked for structures, please DRAW DRAW them on a paper and post clearly!! answer the full question with all details EACH PART CLEARLY please thanks!! im reposting this please solve all parts and drawit not just word explanations!!arrow_forward
- 8b. Explain, using key intermediates, why the above two products are formed instead of the 1,2-and 1,4- products shown in the reaction below. CIarrow_forward(5pts) Provide the complete arrow pushing mechanism for the chemical transformation depicted below Use proper curved arrow notation that explicitly illustrates all bonds being broken, and all bonds formed in the transformation. Also, be sure to include all lone pairs and formal charges on all atoms involved in the flow of electrons. CH3O H I I CH3O-H H I ① Harrow_forward6. Draw the products) formed from the following reactions. (a) HIarrow_forward
- Don't used Ai solutionarrow_forwardPlease correct answer and don't used hand raitingarrow_forward1. For each of the following, predict the products of the reaction by writing a balance net ionic equation for each. If no reaction is expected, then write NO REACTION. (a) AgNO3 (aq) is mixed with Na2CO3 (aq). (b) An aqueous solution of ammonium sulfate is added to an aqueous solution of calcium chloride. (c) RbI (aq) is added to Pb(NO3)2 (aq). (d) NaCl (s) is added to AgNO3 (aq).arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning