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Elements
Periodic Law
Laws & Elements
Electron Config.
100
The idea of arranging the elements in the periodic table according to their chemical and physical properties is attributed to... a. Mendeleev. b. Moseley. c. Bohr. d. Ramsay.
Who is Mendeleev?
100
The discovery of what elements added a new column to Mendeleev's periodic table? a. noble gases b. radioactive elements c. transition elements d. metalloids
What is noble gases?
100
A horizontal row of blocks in the periodic table is called a(n) a. group. b. period. c. family. d. octet.
What is period?
100
When an electron is acquired by a neutral atom, the energy change is called a. electron affinity. b. electronegativity. c. ionization energy. d. electron configuration.
What is electron affinity?
100
The most characteristic property of the noble gases is that they a. have low boiling points. b. are radioactive. c. are gases at ordinary temperatures. d. are largely unreactive.
What is are largely unreactive?
200
Mendeleev left spaces in his periodic table and predicted the existence of three elements and their a. atomic numbers. b. colors. c. properties. d. radioactivity.
What is properties?
200
What are the radioactive elements with atomic numbers from 90 to 103 called? a. the noble gases b. the lanthanides c. the actinides d. the rare-earth elements
What is the actinides
200
The periodic law states that a. no two electrons with the same spin can be found in the same place in an atom. b. the physical and chemical properties of the elements are functions of their atomic numbers. c. electrons exhibit properties of both particles and waves. d. the chemical properties of elements can be grouped according to periodicity but physical properties cannot.
What is the physical and chemical properties of the elements are functions of their atomic numbers?
200
Avogadro's number is a. the maximum number of electrons that all the energy levels can accommodate. b. the number of protons and neutrons that can fit in the shells of the nucleus. c. the number of particles in 1 mole of a pure substance. d. the number of particles in exactly 1 gram of a pure substance.
What is the number of particles in 1 mole of a pure substance?
200
Elements to the right side of the periodic table (p-block elements) have properties most associated with a. gases. b. nonmetals. c. metals. d. metalloids.
What is nonmetals?
300
Mendeleev predicted that the spaces in his periodic table represented a. isotopes. b. radioactive elements. c. unstable elements. d. undiscovered elements.
What is undiscovered elements?
300
What are the elements with atomic numbers from 58 to 71 called? a. the lanthanides b. the noble gases c. the actinides d. the alkali metals
What is the lanthanides?
300
Elements in a group or column in the periodic table can be expected to have similar a. atomic masses. b. atomic numbers. c. numbers of neutrons. d. properties.
What is properties?
300
A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound is called a. electron affinity. b. electron configuration. c. electronegativity. d. ionization potential.
What is electronegativity?
300
The group of 14 f block elements in the sixth period is the a. actinides. b. lanthanides. c. transition elements. d. metalloids.
What is lanthanides?
400
Mendeleev did not always list elements in his periodic table in order of increasing atomic mass because he grouped together elements with similar a. properties. b. atomic numbers. c. densities. d. colors.
What is properties?
400
Argon, krypton, and xenon are a. alkaline earth metals. b. noble gases. c. actinides. d. lanthanides.
What is noble gases?
400
The periodic law allows some properties of an element to be predicted based on its a. position in the periodic table. b. number of isotopes. c. symbol. d. color.
What is position in the periodic table?
400
Compared to the alkali metals, the alkaline-earth metals a. are less reactive. b. have lower melting points. c. are less dense. d. combine more readily with nonmetals.
What is are less reactive?
400
To which block do the actinide elements belong? a. d block b. s block c. f block d. p block
What is f block?
500
The person whose work led to a periodic table based on increasing atomic number was a. Moseley. b. Mendeleev. c. Rutherford. d. Cannizzaro.
Who is Moseley?
500
The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic a. masses. b. numbers. c. radii. d. charges.
What is numbers?
500
Barium, atomic number 56, is the fifth element in Group 2. What is the atomic number of radium, the next element in Group 2? a. 64 b. 74 c. 88 d. 103
What is 88?
500
According to the law of definite proportions, any two samples of KCl have a. the same mass. b. slightly different molecular structures. c. the same melting point. d. the same ratio of elements.
What is the same ratio of elements?
500
Which block in the periodic table contains the alkali metals? a. s block? b. p block? c. d block? d. f block?
What is s block?