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What is the electron configuration of an electrically neutral halogen? Responses 1s22s22p2 1 s 2 2 s 2 2 p 2 1s22s1 1 s squared 2 s to the power of 1 1s12s22p63s23p63d14s2 1 s to the power of 1 2 s squared 2 p to the pow...
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For the A groups (Groups 1A to 8A), how does the group number relate to the electron arrangement in atoms of the group? Responses The group number is equal to the number of electrons in the element. The group number is e...
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Francium must lose one electron to get a full outer shell. What is the name of the group to which francium belongs? Responses alkali metal alkali metal halogen halogen alkaline earth metal alkaline earth metal noble gas
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Which statement explains why the noble gases are so unreactive? Responses They have seven valence electrons. They have seven valence electrons. They have one valence electron. They have one valence electron. They have tw...
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How many valence electrons are in the outermost shell of all halogens? Responses 1 1 4 4 7 7 8
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Which statement is true about the ionic size of the elements in a group as one moves from top to bottom in that group? Responses Ionic size stays the same within the group. Ionic size stays the same within the group. Ion...
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Which elements have properties similar to those of chlorine (Cl)? Responses F, Ar, Ne F, uppercase A lowercase r , uppercase N lowercase e Ar, S, P uppercase A lowercase r , S, P Na, Mg, Al uppercase N lowercase a , uppe...
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How did Dmitri Mendeleev deal with elements that had not yet been discovered? Responses He gave them names and properties and placed them in the table. He gave them names and properties and placed them in the table. He c...
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Which element has the greatest first ionization energy? Responses Rb uppercase R lowercase b Fr uppercase F lowercase r Li uppercase L lowercase i F
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Which notation represents the largest atomic radius? Responses Ca uppercase C lowercase a Mg2+ uppercase M lowercase g superscript 2 plus end superscript Ca2+ uppercase C lowercase a superscript 2 plus end superscript Mg
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Which set of elements is in the correct order of increasing first ionization energy? Responses P, S, Cl P, S, uppercase C lowercase l Be, Mg, Ca uppercase B lowercase e , uppercase M lowercase g , uppercase C lowercase a...
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What happens to the atomic size of the elements as one goes from the bottom to the top of a group? Responses Atomic size stays the same as one moves from bottom to top in a group. Atomic size stays the same as one moves...
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Which element has the same number of valence electrons as oxygen (O)? Responses nitrogen (N) nitrogen (N) neon (Ne) neon left parenthesis uppercase N lowercase e right parenthesis fluorine (F) fluorine (F) sulfur (S) sul...
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Which element has the most properties in common with molybdenum (Mo)? Responses vanadium (V) vanadium left parenthesis uppercase V right parenthesis iron (Fe) iron left parenthesis uppercase F lowercase e right parenthes...
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Which element has four energy levels? Responses cesium (Cs) cesium left parenthesis uppercase C lowercase s right parenthesis potassium (K) potassium (K) sodium (Na) sodium left parenthesis uppercase N lowercase a right...
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Which element has the same number of energy levels as bromine (Br) and the same number of valence electrons as barium (Ba)? Responses beryllium (Be) beryllium left parenthesis uppercase B lowercase e right parenthesis ca...
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Which statement is true about elements in a period on the periodic table? Responses They have different properties that show no pattern. They have different properties that show no pattern. They have similar properties....
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Which law is defined as elements arranged in order of increasing atomic number, there is a recurring pattern to their physical and chemical properties? Responses law of proportions law of proportions table law table law...
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What is the primary characteristic by which the modern periodic table is arranged? Responses increasing atomic mass increasing atomic mass chemical and physical properties chemical and physical properties date of discove...
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What was the key characteristic by which Dmitri Mendeleev arranged his periodic table? Responses increasing atomic radius size increasing atomic radius size increasing atomic number increasing atomic number increasing at...
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An atom of gold(Au) has 79 electrons. It has a net charge of 0. How many protons does it have? Responses 71 71 75 75 76 76 79 79
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An atom has an average atomic mass of about 24.3 amu. What is the chemical symbol for the atom? Use the periodic table. Responses Ca uppercase C lowercase a Mn uppercase M lowercase n Cr uppercase C lowercase r Mg
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An atom has 24 protons and 12 neutrons. What is the chemical symbol for the atom? Use the periodic table. Responses Mg uppercase M lowercase g Ca uppercase C lowercase a Cr uppercase C lowercase r K K
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Chlorine is made up of 75.78% 35Cl and 24.22% 37Cl. The atomic mass of 35Cl is 34.969 amu. The atomic mass of 37Cl is 36.966 amu. What is the average atomic mass of a sample of chlorine? Responses 34.969 amu 34.969 lower...
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An atom of strontium has at least four different isotopes. What is different between an isotope of 88Sr and an isotope of 84Sr? Responses four protons four protons four neutrons four neutrons two protons and two neutrons...
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