What is the oxidation number of iodine in lo_3? -1 0 +3 +5 +7 What is the electr

Question

What is the oxidation number of iodine in lo_3? -1 0 +3 +5 +7 What is the electron configuration for a lead atom? [Xe]6s^2+p^2 [Kr]+5d^106s^26p^2 [Xe]4f^145d^10106s^26p^2 [kr]4d^104f^145d^2 All of the following are correctly named Except LiCIO_4: lithium perchlorate CaHPO calcium hydrogen phosphide NaCN; sodium cyanide Mg(OH)_2: magnesium hydroxide CaSO_4, : calcium sulfite Non-ideal behavior for a gas is most likely to be observed under conditions of high temperature and low pressure high temperature and high pressure low temperature and low pressure standard temperature and pressure low temperature and high pressure What is the net ionic equation for the reaction of aqueous lead(II) nitrate with aqueous sodium bromide? Pb(NO_2)_2 (aq) + 2 NaBr(aq) rightarrow PbBr_2(aq) +2 NaNO_2, (s) Na^+(aq) + NO^- _3 (aq) rightarrow NaNO_2(s) Pb^2+(aq) + 2 Br^-(aq) rightarrow PbBr_2(s) Pb(NO_3)_2(aq) + 2 NaBr_2(s) rightarrow PbBr_2(s) + 2NaNO_3(aq) According to the Bohr model for the hydrogen atom, the energy necessary to excite electron from n = 2 to n = 3 _ is an _______ than the energy necessary to excite an electron from n = 4 to n = 5. less than greater than equal to or greater than either equal to greater than either less than or equal to Aluminium reacts with oxygen to produce aluminium oxide: 4Al(s) + 3 O_2 (g) rightarrow 2Al_2O_3 (s) If 5.0 moles of aluminum react with excess O_2, how many moles of Al_2O_3, can be formed? 1.0 2.0 mol 2.5 mol 5.0 mol 10.0 mol Which one of the following is NOT a SI base unit? kilogram Fahrenheit Kelvin meter second

Explanation / Answer

31. IO3- ion oxidation state is +5 , claculation x+3(-2)=-1

x=-1+6=+5, so answer is D

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