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13) Which of the following is the correct classification for both calcium and iron? A) Ca...
3. Selected symbols have been placed into the blank Periodic Table of the Elements, above. Match...
3. Selected symbols have been placed into the blank Periodic Table of the Elements, above. Match the symbol to the following descriptions. Use an element symbol only once. a) a halogen b) a semimetal c) an element in the lanthanide d) an element with atomic number 13 e) an alkali element f) a nonmetal left of the semimetals in the periodic table g) an element in the actinide series h) a representative non-metal in the fourth period i) a noble...
Which of the following are incorrectly paired? Sr, alkaline earth metal Ir, transition metal OF, halogen...
Which of the following are incorrectly paired? Sr, alkaline earth metal Ir, transition metal OF, halogen Pb, transition metal Rb, alkali metal
1. An element belongs to Group 9. What common name might be used to describe the...
1. An element belongs to Group 9. What common name might be used to describe the group to which the element belongs? a) alkaline earth b) semimetal c) nonmetal d) transition metal e) noble gas 2. Which of the following elements is most likely to react with oxygen? a) aluminium b) argon c) magnesium d) nitrogen e) silicon 3. Which element X is most likely to react to form the compound XF5? a) carbon b) antimony c) chlorine d) calcium...
10) How many valence electrons are there in an atom with an electron configuration of 1s...
10) How many valence electrons are there in an atom with an electron configuration of 1s 2s 2p 3s 3ps A) 2 B) 3 C) 5 D) 7 E) none of these 11) Consider the element with the electron configuration (Kr]5524d105p. This element is A) a halogen B) a transition metal C) an alkali metal D) an alkaline earth metal E) a noble gas 12) In which set of elements would all members be expected to have very similar chemical...
FirstName Date La Teskore for Summer 2018 Chem 1. Write the names and symbols of first...
FirstName Date La Teskore for Summer 2018 Chem 1. Write the names and symbols of first 20 elements (1-20) in order. (10 points) 2. Write the group lA elements (3 or more). Are they nonmetal or metal? (4pts) 3. Write the group VIlIA elements (3 or more). Are they metal or nonmetal? (4pts) 4. 1D the significant figures:(4pts) 10.1203 : 0.0052 : calculate 100.01 1.11112 5. Homogeneous mixtures are also known as(4pts) A) solids; B) compounds; C) elements; D) substances;...
d. NH4(C5Ohm e. (NH4)2CO3 47. Which of the following are incorrectly paired a) Sr, alkaline earth...
d. NH4(C5Ohm e. (NH4)2CO3 47. Which of the following are incorrectly paired a) Sr, alkaline earth metal b) Ta, transition metal c) F, halogen d) As, halogen e) , transition metal 48. Which of the following are incorrectly paired? a) Phosphorus, Pr b) Palladium, Pd c) Platinum, Pt d) Lead, Pb e) Potassium, K 49. Which of the following names is incorrect? a) cobalt(II) chloride b) magnesium oxide c) aluminum(III) oxide d) diphosphorus pentoxide e) All of the above names...
Match the element below's symbol and atomic mass with the correct description. Enter only the letter...
Match the element below's symbol and atomic mass with the correct description. Enter only the letter of the correct choice. a. the heaviest alkaline earth metal b. the lightest metalloid in Group 5A(15) c. the coinage metal in Group 1B(11) whose atoms have the fewest electrons d. the halogen in Period 4
9. Which elements have a partially filled p sublevel in their electron configuration? or files A) alkali metals B)...
9. Which elements have a partially filled p sublevel in their electron configuration? or files A) alkali metals B) alkaline earth metals C) halogens D) noble gases E) transition metals 1st 3 CHEM 1 10. Which element has the abbreviated electron configuration [Ne]3s23pl? Α) ΑΙ B) P C ) Si DCI E) Ar 11. What is the abbreviated electron configuration for Fe? A) [Ar]4s9 B) [Ar]3d C) [Ar]45236 D) [Ar]4:24p6401 E) [Ar]4,2347
1. Name the neutral element(s) in the fourth period of the periodic table which has: a)...
1. Name the neutral element(s) in the fourth period of the periodic table which has: a) 7 valence electrons (name two elements) b) [Ar] 4s23d104p2 configuration c) the alkaline earth metal d) the largest atomic radius e) the halogen f) diamagnetic electron configurations (name all elements)
7. New Dec 11 2018. Which of the following is acidic when dissolved in water? SO,...
7. New Dec 11 2018. Which of the following is acidic when dissolved in water? SO, b. NO c. Na-O d. CaO Two of these a. e. NEW July 27, 2019. Elements of moderm periodic table are arranged according to increase in Group 2A elements are called and group 7A elements of periodical table are called.. 8. , respectively, atomic number /Alkaline earth metals/ noble gases b. a. atomic number /alkali metals / alkaline earth metals atomic number /Alkaline earth...
3. Selected symbols have been placed into the blank Periodic Table of the Elements, above. Match the symbol to the following descriptions. Use an element symbol only once. a) a halogen b) a semimetal c) an element in the lanthanide d) an element with atomic number 13 e) an alkali element f) a nonmetal left of the semimetals in the periodic table g) an element in the actinide series h) a representative non-metal in the fourth period i) a noble...
Which of the following are incorrectly paired? Sr, alkaline earth metal Ir, transition metal OF, halogen Pb, transition metal Rb, alkali metal
10) How many valence electrons are there in an atom with an electron configuration of 1s 2s 2p 3s 3ps A) 2 B) 3 C) 5 D) 7 E) none of these 11) Consider the element with the electron configuration (Kr]5524d105p. This element is A) a halogen B) a transition metal C) an alkali metal D) an alkaline earth metal E) a noble gas 12) In which set of elements would all members be expected to have very similar chemical...
FirstName Date La Teskore for Summer 2018 Chem 1. Write the names and symbols of first 20 elements (1-20) in order. (10 points) 2. Write the group lA elements (3 or more). Are they nonmetal or metal? (4pts) 3. Write the group VIlIA elements (3 or more). Are they metal or nonmetal? (4pts) 4. 1D the significant figures:(4pts) 10.1203 : 0.0052 : calculate 100.01 1.11112 5. Homogeneous mixtures are also known as(4pts) A) solids; B) compounds; C) elements; D) substances;...
d. NH4(C5Ohm e. (NH4)2CO3 47. Which of the following are incorrectly paired a) Sr, alkaline earth metal b) Ta, transition metal c) F, halogen d) As, halogen e) , transition metal 48. Which of the following are incorrectly paired? a) Phosphorus, Pr b) Palladium, Pd c) Platinum, Pt d) Lead, Pb e) Potassium, K 49. Which of the following names is incorrect? a) cobalt(II) chloride b) magnesium oxide c) aluminum(III) oxide d) diphosphorus pentoxide e) All of the above names...
9. Which elements have a partially filled p sublevel in their electron configuration? or files A) alkali metals B) alkaline earth metals C) halogens D) noble gases E) transition metals 1st 3 CHEM 1 10. Which element has the abbreviated electron configuration [Ne]3s23pl? Α) ΑΙ B) P C ) Si DCI E) Ar 11. What is the abbreviated electron configuration for Fe? A) [Ar]4s9 B) [Ar]3d C) [Ar]45236 D) [Ar]4:24p6401 E) [Ar]4,2347
7. New Dec 11 2018. Which of the following is acidic when dissolved in water? SO, b. NO c. Na-O d. CaO Two of these a. e. NEW July 27, 2019. Elements of moderm periodic table are arranged according to increase in Group 2A elements are called and group 7A elements of periodical table are called.. 8. , respectively, atomic number /Alkaline earth metals/ noble gases b. a. atomic number /alkali metals / alkaline earth metals atomic number /Alkaline earth...
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