Electron Configuration 1s²2s²2p4 s²2s²2p 3s²3pᵒ4s¹ 1s²2s²2p 3s¹ 1s²2s²2p² 1s²2s²2p 3s²3p¹ Number of Electrons in Energy Level 1 3 4 2 Atomic Element Element Number Symbol Name
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- Use the periodic table shown in Fig. 4.9 to find the symbol or name for each of the following elements. Symbol Name Co rubidium Rn radiumFill in the missing information about the atoms in the table below. symbol SI Ge Sn Continue number of protons 14 32 50 number of electrons total 14 32 50 valence 4 4 4 number of electron shells 3 4 4 Submit Assignment Rights Reserve Terms of Use vacy Center Apestnavclient.psonsvc.net/#/question/8180ba9a-f6b3-4f59-8038-7c101346eedc/6e9b3589-916b-4d10-aeec-2 Review - A Bookmark Chemistry Unit 4_the Periodic Table(Fall2020) / 2 of 30 An atom has two valence electrons, but four shells. This element is a member of which group or family? O A. halogen B. noble gas C. alkaline earth metal D. alkali metal
- Hcc Dashboar x E Buy Essay x G find some X © Periodic T X A ALEKS - JX Mcc Chapter 5 x G convert c X A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNsikr7j8P3jH-IQİHqRdYV 6Ux63SypJXz0Coxvwqgg4JkWI77rzDGvdXC.. O GASES Using Avogadro's Law Jacquel Search r jacqueh mail.goo Fluorine gas and water vapor react to form hydrogen fluoride gas and oxygen. What volume of hydrogen fluoride would be Profile- produced by this reaction if 8.60 cm of water were consumed? web.robl Cuteding of the mi Also, be sure your answer has a unit symbol, and is rounded to 3 significant digits. Virtual E -Roblox web.robl Virtual B group on Manage appleid.a Your App accountHCc Dashboar Buy Essay X G find some x © Periodic T x A ALEKS - J x Huc Chapter 5 x G convert C X A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IQİHQRDYV 6Ux63SypJXz0Coxvwqgg4JkWI74Meq7fCi1Pjl.. ☆ O GASES Solving for a gaseous reactant Jacqueline v eh DO The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of sodium azide, which produces large volumes of nitrogen gas. e - obl dind e mi 1. Write a balanced chemical equation, including physical state symbols, for the aal E blox robl ual B up on decomposition of solid sodium azide (NaN,) into solid sodium and gaseous dinitrogen. nage pleid.a ur App count 2. Suppose 82.0 L of gas are produced by this reaction, at a temperature of 12.0 °C and pressure of exactly 1 atm. Calculate the mass of sodium azide that must have reacted. Round your answer to 3 significant digits. 回山回UICctron) Part B. (To be accomplished on week 3 day 3) Directions: Complete the following table with the required number of electrons to lose or gain to acquire stability use. (Use your periodic table) Lose Gain Element Symbol How many electrons to How many Electrons to gain lose Calcium Са 2e Selenium Argon Ay Lithium 13
- Core Charge The nucleus plus the inner shells of electrons (non-valence) constitute the core of the atom. Core charge = number of protons – number of core electrons Calculate the core charges for the atoms below. Li Be В N F Ne Answer Bank +8 -5 -8 +3 +10 +2 +7 -7 -6 +4 +6 -1 -6 +9 -4 -2 +1 +5 -3Below is a table of elements in a parallel universe: Element Symbol Charge Atomic Mass Scratchium St 0 40 g/mol Itchium It -1 36 g/mol Discostuium Ds -2 80 g/mol Margium Mr +1 90 g/mol Bartium Bt +2 136 g/mol Based on this information answer the following questions. a.) Which element is least likely to form a bond with another atom? b.) What is the chemical formula for the compound of two scratchium atoms bond with four itchium atoms? c.) What is the name of that same compound? d.) What type of bond does scratchium and itchium form?CHEMISTRY (2021) ASSESSMENT CHEMISTRY I 12-3 (THOMAS WILLIAMS, ID: 12390719) Aluminum has three valence electrons, and oxygen has six valence electrons. What is the formula for aluminum oxide A AlgO3 Al,0 C AIO D Al203 Save B
- useGp0gviewfomith direct contaminatio Which of the elements listed below has a lower ionization energy?* O Argon PhosphorusDetermine the charge of each ion: A rubidium atom that has lost one electron= An iodine atom that has gained one electron= An iron atom that has lost two electrons=-22 A copper atom has a mass of 1.06 x 10 g and a penny has a mass of 2.5 g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of copper atoms? Round your answer to 3 significant digits. How many moles of copper atoms have a mass equal to the mass of a penny? Round your answer to 2 significant digits. OD g 0 x10 X S