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valence(valency, valence number) in the number of valence -------------an atom has form, with one or more other---------- .
valence(valency, valence number) in the number of valence electron an atom has form, with one or more other valency electron
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in a certain atom the last electron has a 3d2 electron configuration write the electron configuration of the element using a noble gas as a core
So for example if they gave us: Ti2+I would write the noble gas electron configuration like this [Ar] 3d2 4s2And then just take away 2 e- from the last number...
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To begin, drag the Na (sodium) and Cl (chlorine) atoms into the simulation area. Turn on Show valence electrons . A valence electron is found in the outermost energy level of the atom.
Let's take a compound NaCl ,The outer shell electronic configuration of Na = [Ne] 2S2 2P0On releasing one electron Na gets a stable noble gas like electronic configurationBut Cl on...
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In an atom the last electron has a 3d² electron configuration.then what is the electron configuration of the element using a noble gas as a core?
So for example if they gave us: Ti2+I would write the noble gas electron configuration like this [Ar] 3d2 4s2And then just take away 2 e- from the last number...
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If 86.33 grams of sodium reacts with an excess of chlorine, what amount of Salt (sodium chloride) will be produced? Sodium + chlorine ® sodium chloride Na + Cl2 ® NaCl
Solution:Sodium + chlorine → sodium chloride The balanced chemical equation:2Na + Cl2 → 2NaClAccording to the equation above: n(Na) = n(NaCl)Moles of Na = Mass of Na / Molar mass of NaThe molar...
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Potassium bromide reacts with chlorine to produce potassium chloride and bromine. How Many grams of bromine are produced when 15.0 g of potassium bromide are used?
Solution:The balanced chemical equation:2KBr + Cl2 → 2KCl + Br2According to the equation above: n(Br2) = n(KBr)/2Moles of KBr = Mass of KBr / Molar mass of KBrThe molar mass of...
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According to the following reaction, how many grams of bromine monochloride will be formed upon the complete reaction of 26.6 grams of chlorine gas with excess bromine?
The equation for this reaction is: Br2 + Cl2 → 2BrCl The number of moles of chlorine gas equals: ν(Cl2) = m(Cl2)/Mr(Cl2) = 26.6 g / (2×35.5 g mol-1) =...
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A 0.4230 g sample of impure sodium nitrate was heated, converting all the sodium nitrate to .1235 g of sodium nitrate and oxygen gas. Determine the percent of sodium nitrate in the original sample.
Answer:2HNO3 = 2HNO2 + O2m= 85 x 0.1235 / 69= 0.1521W%= 0.1521 / 0.4230 = 36%
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Liquid bromine (Br2) has a density of 2.91g/mL. How many molecules of bromine are contained in a 8.50-mL sample of bromine?
m = V×ρm(Br2) = 8.50 mL × 2.91 g/mL = 24.735 gM(Br2) = 159.808 g/moln = m/Mn(Br2) = 24.735 g / 159.808 (g/mol) = 0.154 molOne mole of Br2 molecules...
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A 79.9g sample of bromine contains approximately 1 mole of bromine atoms. How many bromine atoms are in a .80kg sample of bromine?
At first, kilogrammes should be turned into grams:m=80×1000=80000(g).Then, mass should be divided by molar mass:n=m/M=80000/79.9=1001.3(mol).(The data is not very clear. If the point is not mistake, and there are .80...
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