The melting point, boiling point and density of technetium 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: 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 periodic table, elements are classified as metals, non-metals or metalloids.

Question

Want to see the full answer?

Answer 1

Question

Chapter 3, Problem 2P

Interpretation Introduction

Interpretation:

The melting point, boiling point and density of technetium 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:

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 periodic table, elements are classified as metals, non-metals or metalloids.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

The reaction of lithium with sulfur is similar to that of sodium with sulfur. Write the balanced chemical equation for the reaction of lithium with sulfur. Include phase symbols.

If you blow carbon dioxide gas into a solution of calcium hydroxide, a milky-white precipitate of calcium carbonate forms. Write a balanced equation for the formation of calcium carbonate in this reaction. Calcium oxide is prepared by heating limestone (cal- cium carbonate, CaCO3) to a high temperature, at which point it decomposes to calcium oxide and carbon dioxide. Write a balanced equation for this preparation of calcium oxide. . The brilliant white light in some firework displays is produced by burning magnesium in air. The magnesium reacts with oxygen in the air to form magnesium oxide. Write a balanced equation for this reaction. Answer true or false. (a) Formula weight is the mass of a compound expressed in grams. (b) 1 atomic mass unit (amu) is equal to 1 gram (g). (c) The formula weight of H2O is 18 amu. (d) The molecular weight of H2O is 18 amu. (e) The molecular weight of a covalent compound is the same as its formula weight.

Write the balanced chemical equation for the reaction of solid strontium with iodine gas.