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15. Complete the table below. (8 marks) Element Atomie Group Element name Family Period Metal or...
Give the symbol of the element an alkaline earth metal in period 4 group 5A (15), period 3 a noble gas in period 3 a halogen in period 3 group 4A (14), period 2
Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. description Does any element match the description? If you checked yes, give the symbol of an element that matches. An element in Period 6 and Group 4A. Yes No Yes No A nonmetal in Group 7A....
Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. description Does any element match the description? If you checked yes, give the symbol of an element that matches. An element in Period 4 and Group 1A Yes A nonmetal in Group 7A. An alkaline earth...
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...
an alkaline earth metal in period 2 Express your answer as a chemical symbol. group 5A (15), period 3 Express your answer as a chemical symbol. a noble gas in period 3 Express your answer as a chemical symbol. a halogen in period 3 Express your answer as a chemical symbol. group 4A (14), period 4 Express your answer as a chemical symbol.
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...
1 Name a main group element in the fourth period (row) of the periodic table with four valence electrons. Express your answer as a chemical symbol (ex: He).
Complete the table below with element name, full atomic symbol, number of electrons, mass number, number of protons, neutrons and net charge: 8. Mass Protons Element SNumber NeutronsCharge SymbolElectrons Iodine 53 131 18 1- 78 125 Lead 28 65 35
1. Two fifth-period atoms, one of a transition metal, M, and the other of a main-group nonmetal, X , form a compound with the formula M2X3 . Enter answers with noble-gas core, that is, an inner-shell configuration corresponding to nearest noble gases, plus outer electrons. What is the electron configuration of atom X if M is Ru ? (Express your answer in condensed form, in order of increasing orbital energy.) What is the electron configuration of atom X if M...
References Chapter 2: EOC Choose the name and chemical symbol for a nonmetal in the second period. , carbon , lithium , beryllium Choose the name and chemical symbol for an alkali metal in the fifth period. , potassium , barium , cesium , rubidium Choose the name and chemical symbol for the third-period halogen. , chlorine , argon , fluorine , sulfur Choose the name and chemical symbol for an element that is a gas at 20 °C and...