Which characteristics describe most solid nonmetals? They are malleable and have metallic luster. Which element is a metalloid? not They are malleable and lack metallic luster. arsenic B) boron They are brittle and have metallic luster. C) silicon D) sulfur They are brittle and lack metallic luster. An atom in the ground state contains a total of 5 electrons, 5 An atom in the ground state has a stable valence electron protons, and 5 neutrons. Which Lewis electron-dot diagram configuration. This atom could be an atom of represents this atom? Al B) Cl C) Na D) Ne A) B) C) D) Which element at STP exists as monatomic molecules? Magnesium and calcium have similar chemical properties N B) O C) Cl D) Ne because a magnesium atom and a calcium atom have the same Which element is a metalloid? atomic number Al B) Ar C) As D) Au mass number total number of electron shells The element arsenic (As) has the properties of total number of valence electrons metals, only nonmetals, only Which compound forms a green aqueous solution? both metals and nonmetals RbCl B) CaCl2 C) NiCl2 D) MgCl2 neither metals nor nonmetals Put a check in each box that correctly describes the element given. Metal Metalloid Nonmetal Alkali Alkaline Transition Halogen Noble Monatomic Diatomic Metal Earth metal gas Metal Sb Sr Rn P Pt Cs S Fe Br Ar H Si B F He Se Zn Ra Write in the space, “alkali metals”, “alkaline earth metals”, “transition metals”, “halogens”, or “noble gases” to indicate which group each statement is describing.
Which characteristics describe most solid nonmetals? They are malleable and have metallic luster. They are malleable and lack metallic luster. They are brittle and have metallic luster. They are brittle and lack metallic luster. An atom in the ground state has a stable valence electron configuration. This atom could be an atom of Al B) Cl C) Na D) Ne Which element at STP exists as monatomic molecules? N B) O C) Cl D) Ne Which element is a metalloid? Al B) Ar C) As D) Au The element arsenic (As) has the properties of metals, only nonmetals, only both metals and nonmetals neither metals nor nonmetals Which element is not a metalloid? arsenic B) boron C) silicon D) sulfur An atom in the ground state contains a total of 5 electrons, 5 protons, and 5 neutrons. Which Lewis electron-dot diagram represents this atom? A) B) C) D) Magnesium and calcium have similar chemical properties because a magnesium atom and a calcium atom have the same atomic number mass number total number of electron shells total number of valence electrons Which compound forms a green aqueous solution? RbCl B) CaCl2 C) NiCl2 D) MgCl2 Metal Metalloid Nonmetal Alkali Metal Alkaline Earth Metal Transition metal Halogen Noble gas Monatomic Diatomic Sb Sr Rn P Pt Cs S Fe Br Ar H Si B F He Se Zn Ra Put a check in each box that correctly describes the element given. Write in the space, “alkali metals”, “alkaline earth metals”, “transition metals”, “halogens”, or “noble gases” to indicate which group each statement is describing.