Chemistry Quiz 2

Atoms What are the correct symbols for the elements (1)chlorine and (2)iron? Your answer:(1) C and (2) Ir(1) Cl and (2) Fe(1) Cl and (2) Ir(1) Cl and (2) F What are the correct names of the elements with the symbols (1)Na and (2)Ca? Your answer:(1) nitrogen and (2) chlorine(1) sodium and (2) carbon(1) nitrogen (2) copper(1) sodium and (2) calcium The name of the element in Period 3 and Group 4 is Your answer:phosphorussiliconnitrogengallium What is the name of the group (family) that includes the elements magnesium, calcium, and barium? Your answer:halogensnobel gasesalkali metalsalkaline earth metals The element sulfur is most likely to Your answer:conduct heat and electricitybe shinyhave a dull appearancemelt at a high temperature The nucleus of an atom contains Your answer:protons onlyneutrons onlyelectrons onlyprotons and neutrons How many protons and neutrons are in an atom of iron that has a mass number of 55? Your answer:26 protons and 55 neutrons26 protons and 29 neutrons29 protons and 26 neutrons26 protons and 26 neutrons What is the mass number of an atom of tin that has 70 neutrons? Your answer:118.770119120 What is the electron arrangement for potassium? Your answer:2-8-52-8-8-12-8-6-12-1 An element that makes up our teeth and bones has an electron arrangement of 2-8-5. What is the name of the element? Your answer:magnesiumphosphorusnitrogensilicon An element with the electron arrangement of 2-8-8 would be Your answer:an alkali metalan alkaline earth metala halogena noble gas How many electrons are in the outer electron level of the halogen? Your answer:2517 An isotope has a mass number of 74 and contains 42 neutrons. What is the group number of that element? Your answer:4523 In which of the following pairs are both elements halogens? Your answer:bromine and iodineoxygen and iodinefluorine and neonhelium and neon What is the group and period number for the element with an electron configuration of 2-8-6? Your answer:Period 2, Group 8Period 3, Group 6Period 3, Group 8Period 2, Group 6uiz 2 Atoms and Elements1) What are the correct symbols for the elements (1)chlorine and (2)iron? Correct Answer: (1) Cl and (2) Fe2) What are the correct names of the elements with the symbols (1)Na and (2)Ca? Correct Answer: (1) sodium and (2) calcium3) The name of the element in Period 3 and Group 4 is Correct Answer: silicon4) What is the name of the group (family) that includes the elements magnesium, calcium, and barium? Correct Answer: alkaline earth metals5) The element sulfur is most likely to Correct Answer: have a dull appearance6) The nucleus of an atom contains Correct Answer: protons and neutrons7) How many protons and neutrons are in an atom of iron that has a mass number of 55? Correct Answer: 26 protons and 29 neutrons8) What is the mass number of an atom of tin that has 70 neutrons? Correct Answer: 1209) What is the electron arrangement for potassium? Correct Answer: 2-8-8-110) An element that makes up our teeth and bones has an electron arrangement of 2-8-5. What is the name of the element? Correct Answer: phosphorus11) An element with the electron arrangement of 2-8-8 would be Correct Answer: a noble gas12) How many electrons are in the outer electron level of the halogen? Correct Answer: 713) An isotope has a mass number of 74 and contains 42 neutrons. What is the group number of that element? Correct Answer: 414) In which of the following pairs are both elements halogens? Correct Answer: bromine and iodine15) What is the group and period number for the element with an electron configuration of 2-8-6? Correct Answer: Period 3, Group 6