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Periodic Table Review. Ga , Pb , Ge , P , S , Cl , I, He , Xe , U Which of the above elements is a noble gas?. He, Xe. What is the charge of the following ion: Lead IV. +4 (Roman numeral tells you the positive charge). What are group 1 elements called?. Alkali Metals.
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Ga, Pb, Ge, P, S, Cl, I, He, Xe, UWhich of the above elements is a noble gas? • He, Xe
What is the charge of the following ion: Lead IV • +4 (Roman numeral tells you the positive charge)
What are group 1 elements called? • Alkali Metals
How did HenryMoseley arrange elements on the Periodic Table? • Increasing atomic NUMBER
Place each of the following groups of elements in order of DECREASING atomic radius.Li, O, C, F, N • Li, C, N, O, F
What is the charge of the following ion: sodium • +1 (b/c it is in group 1)
State the group trend (moving top to bottom down the groups) for first ionization energy. • DECREASES
Place each of the following groups of elements in order of DECREASING atomic radius.Mg, Cl, Na, P • Na, Mg, P, Cl
________ is the measure of the ability of an atom in a chemical compound to attract electrons. Electronegativity
Suppose lithium formed an ion. How many electrons and protons does a lithium ion have? • Li+1 (lost 1 e-) • 3protons & 2 electrons
Li, Ca, Y, Mn, Hg, Ga, Pb, Ge, P, S, Which of the above elements is a alkaline earth metal? • Ca
Arrange the following elements in order of decreasingfirst ionization energy: Mg, Ba, Be • Be, Mg, Ba
What group of elements are considered the most stable? • Noble Gases
State the group trend (moving top to bottom down the groups) for electronegativity. • DECREASES
Place each of the following groups of elements in order of DECREASING electronegativity.Po, Se, O • O, Se, Po
_____________ is the energy required to remove an electron from an atom. • first ionization energy
where would you find elements with similar properties? Group or Period • GROUP
Place each of the following groups of elements in order of DECREASING atomic radius.Li, Rb, K, Na • Rb, K, Na, Li
List 4 properties of metals. • Luster • Good conductors of electricity • Ductile • Malleable • High Melting points • Solid, except Hg is a liquid • Lose electrons
State the period trend (moving left to right across the periods) for first ionization energy. • INCREASES
Arrange the following elements in order of decreasingfirst ionization energy: Li, O, C, K, Ne, F • Ne, F, O, C, Li, K
1. How did DmitriMendeleev arrange elements on the Periodic Table? • Increasing atomic MASS
What is the charge of the following ion: bromide • -1 (b/c it is in group 17)
What is the name of the Cl-1 ion? • ChlorIDE
State the period trend (moving left to right across the periods) for atomic radius. • DECREASES
What is the difference between a group and a period? List the number of groups and period. • Group = columns (#1-18) • Periods = rows (#1-7)
How are the elements arranged on the Periodic Table today? • Increasing atomic NUMBER
What is an anion? Explain how they are formed. • Anion = negative ion b/c electron(s) were GAINED
What is the atomic mass of lithium? • 6.941 amu
Where are the most active metals located? • Lower left corner of group 1 (Fr)
The majority of elements in the periodic table are (metals or nonmetals). • Metals
Ga, Pb, Ge, P, S, Cl, I, He, Xe, UWhich of the following is a rare earth metal? • U
What is the charge of the following ion: aluminum • +3 (b/c it is in group 13)
What is the charge of the following ion: magnesium • +2 (b/c it is in group 2)
Arrange the following elements in order of decreasingfirst ionization energy: Li, B, Rb, F, C • F, C, B, Li, Rb
Suppose nitrogen formed an ion. How many electrons and protons does a nitrogen ion have? • N-3 (gains 3e-) • 7 protons & 10electrons
Li, Ca, Y, Mn, Hg, Ga, Pb, Ge, P, S, Cl, I, He, Xe, UWhich of the above elements is a non-metal? • P, S, Cl, He, I, Xe
State the period trend (moving left to right across the periods) for electronegativity. • INCREASES
Where are metalloids used? • Electronics- computers, calculators
Group 17 elements are called? • Halogens
List 4 properties of nonmetals. • No Luster • Not good conductors of electricity • Not Ductile • Not Malleable • Low Melting points • Gain electrons
Place each of the following groups of elements in order of DECREASING electronegativity.Ga, Br, Ra, Ca • Br, Ga, Ca, Ra
Li, Ca, Y, Mn, Hg, Ga, Pb, Ge, P, S, Which of the above elements is an alkali metal? • Li
_____________ is half the distance between the nuclei of identical atoms joined in a molecule. • atomic radius