Periodic Table and Trends
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Who presented a convincing method for accurately measuring the relative masses of atoms. | Stanislao Cannizzaro
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| Who arranged the elements according to their properties along with the atomic mass of the element. | Dmitri Mendeleev
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| Who arranged the periodic table according to the atomic number. | Henry Moseley
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| The physical and chemical properties of the elements are periodic functions of their atomic numbers is what law? | Periodic law
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| An arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group is the? | Periodic table
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| The name of Group 18 | Noble gases
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| The 14 elements with atomic numbers from 58 (Ce) to 71 (Lu) | Lanthanides
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| The 14 elements with atomic numbers from 90 (Th) to 103 (Lr) | Actinides
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| The name of Group 1? | Alkali Metals
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| The name of Group 2? | Alkaline-Earth Metals
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| What are the main-group elements? | The s-block and p-block elements
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| The name of groups 3 - 12? | Transition metals
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| The name of Group 13? | Boron Group
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| The name of Group 14? | Carbon Group
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| The name of Group 15? | Nitrogen Group
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| The name of Group 16? | Chalcogens
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| The name of Group 17? | Halogens
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| 1/2 the distance between the nuclei of identical atoms bonded together. Tells you the volume of the atom. | Atomic Radii
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| What happens to the radii as you go from left to right across the periodic table? | Decreases
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| What happens to the radii as you go down the periodic table? | Increases
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| Why does the atomic radii decrease as you go across the periodic table? | The added electrons in the same energy level are gradually pulled closer to the more positively charged nucleus.
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| Why does the atomic radii increase as you go down a group? | Energy levels are added
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| what is the energy required to REMOVE one electron from a neutral atom of an element? | Ionization energy
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| What happens to the ionization energy as you go from left to right across the periodic table? | Increases
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| What happens to the ionization energy as you go down a group on the periodic table? | Decreases
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| A positive ion | Cation
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| A negative ion | Anion
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| The electrons available to be gained, lost or shared when forming a chemical compound. | Valence electrons
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| Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing? | atomic mass
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| The discovery of the noble gases changed Mendeleev's periodic table by adding a new? | Group
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| To which group do lithium and potassium belong? | Alkali metals
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| Elements in a group or column in the periodic table can be expected to have similar? | properties
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| Mendeleev predicted that the spaces in his periodic table represented? | undiscovered elements
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| Mendeleev attempted to organize the chemical elements based on their? | properties
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| In the modern periodic table, elements are ordered according to? | increasing atomic number
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| The most useful source of general information about the elements for anyone associated with chemistry is a? | periodic table
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| Argon, krypton and xenon belong to what family? | noble gases
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| The most characteristic property of the noble gases is that they are? | largely unreactive
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| Because the first energy level contains only the 1s sublevel, the number of elements in this period is? | two
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| The elements that border the zigzag line in the periodic table are the? | metalloids
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| The most reactive group of the nonmetals are the? | Halogens
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| How many valence electrons in Group 17? | seven
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