chem 3 awais 8
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| All of the following elements are metals except | Chlorine
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| The second row of the periodic table includes elements | 32
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| is an unreactive elements | Helium
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| Which of the following is a transition elements? | Nickel
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| All of group 1 elements have | one valence electrons
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| Each row in the periodic table ends with a | noble gases
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| In going from left to right in any given row in the periodic table the size of the atoms generally | decrease
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| Compared to the neutral atom from which it is derived, a negative ion is | Always larger
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| Which elements has the largest atomic radius? | Al
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| Which elements has the smallest radius? | Cl
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| Which elements has the lowest first ionization energy? | At
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| Which elements has the highest first ionization energy? | Ar
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| Which ion has the largest radius? | Na+
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| Which elements has the lowest electronegativity? | Cs
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| Which element has the higest electronegativity? | N
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| Fluorine, Bromine, or iodine is | Halogens
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| An element found in group 1 of the periodic table is | Alkali metals
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| In compound, has an oxidation number of 2+ is | Alkaline Earth metals
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| Sodium or cesium | Alkali metals
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| In compounds, has an oxidation number of 1- | Halogens
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| An elements found in group 17 is | Halogens
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| Magnesium or barium is | Alkaline earth metals
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| In compound, has an oxidation number of 1+ is | Alkali metals
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| An elements found in the group 2 is | Alkaline earth metals
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| Is harder and denser than its alkali neighbor | Alkaline earth metals
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| Strontium, which is identified by the red color of fireworks is | Alkaline earth metals
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| Astatine is the largest of this family is | Halogens
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| Luster is | Metals
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| Tightly held valence is | Nonmetals
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| At the right side of the periodic table is | Nonmetals
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| semiconductors is a | Metalloids
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| Good conductors of electricity is | Metals
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| Usually quite brittle is | Nonmetals
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| Properties intermediates between metals and nonmetals | Metalloids
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| A variety of colors is | Nonmetals
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| Three to eight valence electrons is | Nonmetals
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| Poor conducators of heat is | Nonmetals
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| Hydrogen | Has only one electron
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| First period | Contains two elements
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| Second period | Contain eight element
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| Group 2 element | Have two valence electrons
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| Magnesium | Has one more electron than sodium
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| Oxygen | has six valence electrons
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| Noble gases | Are very unreactive
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| Transition elements | Have unpredictable properties
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| Metals | Have loosely bound valence electrons
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| Nonmetals | Tend to gain electrons in chemical reactions
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| A Lewis electrons dot structure shows the total number of electrons in the atom of an elements. | False its valence electrons
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| The electrons dot structure for a metals is likely to have one, two, of three electrons. | True
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| An element with an electron dot structure containing only one electron is likely to be found in the group 7 of the periodic table. | False Group 1
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| Why do elements in the same group period have properties that are different from one another? | Because the number of valence electrons increase as you move from left to right across the period.
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| How does the size of an atoms change when it loses electrons to become a positive ion? | It gets smaller more pull on remaining electrons is stronger (more protons).
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| How does the size of an atom change when it gains electrons to become a negative ions? | It gets smaller less attraction because there are more electrons added.
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| At room temperature, what state (solid, gas, or plasma) are the majority of the elements in on the periodic table? | Solid
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| Are most elements metals, nonmetals, or metalloid? | Metals
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| Elements that have the same number of act in similar ways? | Valence electrons
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| What is the purpose of the zigzag line on the periodic table? | Transition between metals and nonmetals.
Elements on the line have properties of both.
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| Which metals family is considered the most reactive? | Alkali metals
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| Which nonmetals family considered most reactive? | Halogens
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| Which family is considered the most stable? | Noble gases
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| What are synthetic elements? | An elements that doesn't occur naturally on earth, but can be created artificially.
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| Metals: | Luster, conduct heat and electricity, malleable, ductile, lose electrons in the reaction, valence electrons, held loosely, solids room temperature, high melting points.
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| Nonmetals: | Poor conductors of heat and electricity, lower melting point, tightly held valence electrons, tend to gain and share electrons in reaction. Gases and room temp.
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| Metalloids: | Properties of both metals and nonmetals, some are semiconductors 3-6 valence electrons.
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| Electronegativity | Attraction for bonding electrons.
--------------> from left to right it's increase
->decrease. From top to bottom it's decrease
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| Ionization energy | Energy required to remove electrons
From left to right it's increase, and from top to bottom it's decrease.
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| Atomic Radius | Radius of atoms, describe the size of atoms.
From left to right it's decrease, and from top to bottom it's decrease.
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| Reactivity Metals | Reactivity from highest to lowest.
From left to right it's decrease, and from top to bottom it's increase.
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| Reactivity Non Metals | An elements incaple of forming simple positive ions in solution.
From left to right it's decrease, and from top to bottom it's increase.
Reason: How easily electrons can be removed or attracted.
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| The mordern periodic table is arranged according to it's | atomic number
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| The period number of an elements is the same as the ---------- of it's outermost level. | Number
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| The --------- electrons of an elements in the second period, for example are in the ---------- second energy level. | Valence, second
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| A period 3 elements has its valence electrons in the --------- energy level. | three
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| The number of valence electrons changes from ---- to ---- as move left to right across a period for main group elements (skipping the transition elements). | 1 to 8
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Created by:
awais.jat
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