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Non-metals: gas or brittle solid at room temperature, insulators.Metals: usually shiny, conductors, malleable, ductile, solids at room temperature.In what ratio elements bond (oxidation #)Įlement symbol Atomic mass Atomic number Reading the Periodic Table: Elements S 16 32.06.What elements can bond together (valence #).What type of element it is (metal, nonmetal, etc).
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Atomic mass: the average of all the isotopes’ mass.Atomic number: number of protons (and usually electrons, neutrons).The halogens have much higher electron affinities than the alkaline earth metals.ġ5.Elements and Periodic Table Bonding, Compounds, Periodic Table Within the same row, the halogens have smaller atomic radii than the alkaline earth metals.
THE PERIODIC TABLE CHEMISTRY TEST WIZAR FULL
By sharing electrons equally, the alkaline earth metals and halogens both form full octets. The alkaline earth metals have much higher electron affinities than the halogens. Why do halogens often form ionic bonds with alkaline earth metals? Which of the following atoms or ions has the largest effective nuclear charge?ġ4. Of the four atoms depicted here, which has the highest electron affinity?ġ3. Which of the following elements has the highest electronegativity?ġ2. The number increases as the atomic number increases.ġ1. The number decreases as the atomic number increases. How many valence electrons are present in elements in the third period? When dissolved in water, which of the following ions is most likely to form a complex ion with H 2O?ġ0. The atomic radii of these elements decrease as one moves down the column.ĩ. The second ionization energy for these elements is lower than the first ionization energy. These elements are the best electrical conductors in the Periodic Table. Which of the following is an important property of the group of elements shaded in the Periodic Table below? Metals have valence electrons that can move freely.Ĩ. Which of the following properties of metals explains why? Metals are often used for making wires that conduct electricity. Which property or properties increase in the direction of the arrows shown?ħ. The properties of atoms can be predicted, to some extent, by their location within the Periodic Table. Antimony is used in some antiparasitic medications-specifically those targeting Leishmania donovani. first ionization energy of Li < second ionization energy of Be < first ionization energy of Beĥ. first ionization energy of Li < first ionization energy of Be < second ionization energy of Be first ionization energy of Be < first ionization energy of Li < second ionization energy of Be first ionization energy of Be < second ionization energy of Be < first ionization energy of Li Which of the following shows an accurate ranking of ionization energies from lowest to highest? Ionization energy contributes to an atom's chemical reactivity. What determines the length of an element's atomic radius? Silicon has fewer valence electrons than carbon.ģ. Carbon has fewer valence electrons than silicon. Silicon has a smaller atomic radius than carbon. Carbon has a smaller atomic radius than silicon. While these elements share many chemical properties, which of the following best describes a difference between the two elements? Carbon and silicon are the basis of biological life and synthetic computing, respectively. Both lithium and sodium have low atomic weights.Ģ. Lithium and sodium are in the same period of the Periodic Table. Lithium and sodium are in the same group of the Periodic Table. Both lithium and sodium ions are positively charged. Which of the following best explains this similarity? For example, both can form ionic bonds with chloride. Lithium and sodium have similar chemical properties.