Introductory Inorganic Chemistry CHM 101 Quiz

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Questions and Answers

What fundamental property did Moseley suggest should be used to arrange elements instead of atomic weight?

Atomic number (correct)

Electronegativity

Atomic mass

Density

What is the modern periodic law based on?

The properties of elements are arbitrary and may change

The properties of elements are periodic functions of their atomic numbers (correct)

The properties of elements are periodic functions of their atomic volumes

The properties of elements depend on their atomic weight

How did the arrangement of elements by atomic number affect the positioning of previously anomalous pairs?

It caused confusion with noble gases

It created more anomalies between elements

It resolved previous anomalies (correct)

It eliminated the concept of isotopes

What was not accurately predicted by Mendeleev in his periodic table?

Placement of noble gases Signup and view all the answers

What limitation does the atomic number impose on the periodic table?

It limits the number of discovered elements Signup and view all the answers

What is one aim of the course described in the content?

To understand the periodic classification of elements Signup and view all the answers

Which statement best describes the course objectives?

The objectives are specific to the principles of introductory inorganic chemistry. Signup and view all the answers

Which of the following topics is included in the course content?

Hydrogen and its compounds Signup and view all the answers

Who contributed to the development of the periodic table?

Dmitri Mendeleev Signup and view all the answers

What does the course aim to teach about alkali and alkaline earth metals?

Their physical and chemical properties Signup and view all the answers

How is electronic configuration relevant to the course content?

It explains the arrangement of electrons in atoms. Signup and view all the answers

What basic principle does the course intend to convey?

Fundamental concepts of introductory inorganic chemistry Signup and view all the answers

Which of the following topics is NOT covered in the course?

Biochemical pathways of metabolism Signup and view all the answers

What is the primary purpose of the periodic table in chemistry?

To systematize and organize the elements based on their properties Signup and view all the answers

Who was the scientist that proposed that all elements were formed by the coalescence of hydrogen atoms?

Prout Signup and view all the answers

Which of the following scientists corrected the 'atomic mass' of chlorine to 35.5?

Berzelius Signup and view all the answers

What was Mendeleev known for in the context of the periodic table?

Establishing the periodic law Signup and view all the answers

Which attempt at classification of elements is known for the Law of Octaves?

John Newlands Signup and view all the answers

In which section of the periodic table do alkaline earth metals belong?

Group 2 Signup and view all the answers

What concept serves as the basis for the organization of elements in the periodic table?

Similarities in electron configuration Signup and view all the answers

What did the early attempts at classifying elements seek to achieve?

Create a systematic overview of elemental properties Signup and view all the answers

How many horizontal rows are present in the modern periodic table as devised by Mendeleev?

7 Signup and view all the answers

What is the atomic number of Oxygen (O) in the modern periodic table?

8 Signup and view all the answers

Which element is represented by the symbol 'Au' in the periodic table?

Gold Signup and view all the answers

What is the total number of vertical columns in the modern periodic table?

8 Signup and view all the answers

Which element has an atomic mass closest to 40.08 in the periodic table?

Calcium (Ca) Signup and view all the answers

Which of the following elements is classified as a lanthanide?

Lanthanum Signup and view all the answers

What is the atomic number of Iron (Fe) in the periodic table?

26 Signup and view all the answers

Which element is located in the 4th period of the periodic table and has the symbol 'Na'?

Sodium Signup and view all the answers

Which element has the atomic mass of approximately 207.19?

Lead (Pb) Signup and view all the answers

What is the coordination number of a metal atom in a body centred cubic lattice?

Eight Signup and view all the answers

Which of these elements is part of the actinide series?

Neptunium Signup and view all the answers

How does the radius of a metal in an eight coordinate lattice compare to that in a twelve coordinate environment?

It is smaller by approximately 0.97 Signup and view all the answers

What relationship exists between metallic radii and covalent radii?

Metallic radii are generally larger Signup and view all the answers

What is the definition of ionic radius?

The distance from the nucleus to the edge of the electron cloud Signup and view all the answers

How are ionic radii typically estimated?

From distances measured between centers of nearest neighbors Signup and view all the answers

Why are values for ionic radii not completely accurate or reliable?

They cannot be measured absolutely and are approximated Signup and view all the answers

What distinguishes metallic bonds from covalent bonds in terms of bond strength?

Metallic bonds have an average bond order less than one Signup and view all the answers

What technique has allowed for accurate measurement of interatomic distances between different ions?

X-ray crystallography Signup and view all the answers

What is the primary focus of the modern periodic law?

Classification based on the atomic number of elements. Signup and view all the answers

Who are some of the pioneers mentioned that contributed to the development of the periodic table?

J.N Dobereiner, Dmitri Mendeleev, John Newlands. Signup and view all the answers

What does IUPAC nomenclature refer to in the context of newly discovered elements?

A systematic approach to naming elements with atomic number greater than 100. Signup and view all the answers

In what significant way does the modern periodic table differ from Mendeleev's table?

It uses atomic number instead of atomic mass for arrangement. Signup and view all the answers

What was a reason for the international union of pure and applied chemists to create a naming method for new elements?

To solve disputes between discoverers of the same element. Signup and view all the answers

Which pair of elements are located in the periodic table such that K is positioned relatively to Ar?

K is placed before Ar. Signup and view all the answers

What significant aspect of element classification is highlighted by the periodic law?

The properties of elements recur periodically with increasing atomic number. Signup and view all the answers

What anomaly is mentioned in regard to Mendeleev's original periodic table?

Some elements did not fit well into sequence by atomic mass. Signup and view all the answers

Study Notes

Course Information

Course Title: Introductory Inorganic Chemistry
Course Code: CHM 101
Course Team: Professor John Kanayochukwu Nduka (Course Reviewer) – NAU Awka
Institution: National Open University of Nigeria

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Description

Test your knowledge on the fundamentals of inorganic chemistry covered in course CHM 101. This quiz will assess your understanding of key concepts and principles that are crucial for mastery in this subject. Challenge yourself and prepare for further studies in chemistry!