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- 1. Multiple ChoiceWhich of these elements has the greatest atomic radius?HNClCs
- 2. Multiple ChoiceWhat has to occur before an atom in its ground state can emit a photon?reversal of the spin of an electronionization of an electron from the atomrelaxation of an electron to a lower energy stateexcitation of an electron to a higher energy state
- 3. Multiple ChoiceGoing from left to right in the periodic table, the atomic radius decreases. Which of the following explains the atomic radii trend of elements across a period?There is an increase in the number of electron shells.There is a decrease in the number of electron shells.The attraction increases between the nucleus and the outer electrons.The attraction decreases between the nucleus and the outer electrons.
- 4. Multiple ChoiceElectronegativity is a measure of how easy it is for an atom to attract another electron. The elements He, Ne, and Ar have the lowest electronegativity values. What do these elements have in common?They have an outer orbital full of electrons.They have one electron in their outer orbital.They lose a proton which makes them negatively charged.They have an extra electron which makes them positively charged.
- 5. Multiple ChoiceThe ionization potential of an element is the amount of energy required to remove an electron from an isolated atom or molecule. According to the periodic table, which of the following indicates the correct decreasing order of ionization potential?Li>Na>K>CsNa>K>Li>CsLi>K>Na>CsCs>K>Na>Li
- 6. Multiple ChoiceThe elements chromium (Cr) and zinc (Zn) are in period four of the periodic table. Which characteristic of zinc and chromium is correct based on their positions?Zinc has a greater atomic radius than chromium.Zinc loses electrons more easily than chromium.Chromium has more valence electrons than zinc.Chromium has lower ionization energy than zinc.
- 7. Multiple ChoiceElectron affinity increases from bottom to top in a family of nonmetal elements on the periodic table. What other pattern occurs from bottom to top of a nonmetal family based on this change in electron affinity?increase of the atomic numberincrease of chemical reactivitydecrease of activation energydecrease of ionization energy
- 8. Multiple ChoiceUsing the Periodic Table of the Elements, the properties of elements can often be used to deduce the properties of neighboring elements. In which set can the reactivity of the first three elements be used to most accurately predict the reactivity of the fourth element?silver (Ag), sodium (Na), strontium (Sr) → sulfur (S)fluorine (F), oxygen (O), nitrogen (N) → carbon (C)antimony (Sb), tellurium (Te), iodine (I) → xenon (Xe)oxygen (O), sulfur (S), tellurium (Te) → selenium (Se)
- 9. Multiple ChoiceThe Periodic Table of the Elements is useful for revealing patterns and trends in the elements. Which statement accurately describes a pattern in the size of atomic radii in the Periodic Table of the Elements?Atomic radii decrease from left to right across a period and decrease from top to bottom in a group.Atomic radii increase from left to right across a period and increase from top to bottom in a group.Atomic radii decrease from left to right across a period and increase from top to bottom in a group.Atomic radii increase from left to right across a period and decrease from top to bottom in a group.
- 10. Multiple ChoiceFluorine, chlorine, bromine, and iodine all have the same number of valence electrons and have a tendency to gain electrons. Which element has the greatest tendency to gain electrons?fluorinechlorinebromineiodine
- 11. Multiple ChoiceThe size of atoms can be measured using the diffraction of x-rays. Measurements of atomic size confirm that trends can be identified based on location on the Periodic Table of the Elements. Which group of elements is listed in order of decreasing size?boron, carbon, nitrogen, oxygeniodine, bromine, chlorine, fluorinephosphorous, selenium, iodine, radonsodium, potassium, rubidium, cesium
- 12. Multiple ChoiceThe Periodic Table of the Elements was created based on characteristics of elements. The elements are arranged so that elements sharing common characteristics are grouped together. Which characteristic of elements corresponds to a trend in the Periodic Table of the Elements?abundance in naturenumber of neutronscolor in solid phaseradius of atoms
- 13. Multiple ChoiceGroup 17 (7A), the halogens, includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Which statement is most accurate concerning group 17 (7A) on the periodic table?They have 1 valence electron.They are extremely reactive.They are metals.They are inert.
- 14. Multiple ChoiceAccording to periodic trends, which element would have more valence electrons than oxygen?carbon (C)chlorine (Cl)selenium (Se)phosphorus (P)
- 15. Multiple ChoiceElements found on the periodic table are arranged by atomic number and show a periodic pattern of physical and chemical properties. Which is an accurate example of one of these periodic patterns when reading the table from left to right and top to bottom?The number of valence electrons increases as the atomic number decreases.The number of protons in the nucleus decreases as the atomic number increases.The number of valence electrons decreases from the end of one period to the beginning of the next.The number of protons in the nucleus decreases from the end of one period to the beginning of the next.
- 16. Multiple ChoiceIn which pair of elements are both metalloids?Sn and SbSb and TeTe and II and Xe
- 17. Multiple ChoiceBased on its position in the Periodic Table of the Elements, how many valence electrons does phosphorus (atomic number 15) have?35815
- 18. Multiple ChoiceA sample of matter is classified as an electrical conductor. The sample is most likelya nonmetal with tightly bound electrons.a nonmetal with free electrons.a metal with tightly bound electrons.a metal with free electrons.
- 19. Multiple ChoiceThe number of valence electrons in an element affects the reactivity of that element. Which element listed has the fewest valence electrons?beryllium (Be)sodium (Na)oxygen (O)neon (Ne)
- 20. Multiple ChoiceAccording to the Periodic Table of the Elements, which set of elements has similar properties?H, C, IHe, H, AlHe, Ne, ArNa, Ca, Al
- 21. Multiple ChoiceThe element krypton is a gas that shows almost no chemical activity. To find another element with similar properties, what should a student look for on the Periodic Table of the Elements?an element in the same groupan element in the same periodan element with the same net chargean element with the same atomic mass
- 22. Multiple ChoiceAccording to the periodic table, argon is found in what column?1 (1A)2 (2A)16 (6A)18 (8A)
- 23. Multiple ChoiceThe order of the elements in the periodic table is determined by theirabundance in nature.number of protons.number of isotopes.atomic mass.
- 24. Multiple ChoiceThe periodic table has changed over time as new elements have been added to it. Which is the most likely reason scientists update the periodic table?Scientists rename old elementsScientists discover new elements.Stars produce new elements that travel to Earth.Past mistakes are corrected in identifying
- 25. Multiple ChoiceA student looking for an element that will bond with sodium (Na) knows that table salt is a compound of sodium and chlorine (Cl). Based on this information, which of the following elements would most likely bond with sodium?argon (Ar)bromine (Br)calcium (Ca)potassium (K)
- 26. Multiple ChoiceWhich element has 2 electrons in the outermost energy level?cesium (Cs)magnesium (Mg)boron (B)argon (Ar)
- 27. Multiple ChoiceAn atom of which element contains one more proton than one atom of chlorine (Cl)?sulfur (S)argon (Ar)fluorine (F)bromine (Br)
- 28. Multiple ChoiceThe top row of the Periodic Table of the Elements has only two elements. Which of the following best explains why this row contains fewer elements than the other rows?Only noble gases are located on the top rowThe top row contains the two lightest elements.Electrons in orbitals tend to be together in pairs.The innermost electron orbital holds only two electrons.
- 29. Multiple ChoiceIron (Fe) is an effective conductor of heat and electricity. Which other element is most likely to have similar conductivities?potassium (K)nickel (Ni)bromine (Br)krypton (Kr)
- 30. Multiple ChoiceThe Periodic Table is arranged in rows and columns. From left to right along a row, the atomic number in each columndecreases by 2.increases by 1.decreases for gases.increases for metals.
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