本课配套习题挑战模式1/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    1.下列元素属于长周期主族元素的是                                
                                                                    
                            | A: Li | 
| B: P | 
| C: Fe | 
| D: Br | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:5YmN5LiJ5ZGo5pyf5YWD57Sg5Li655+t5ZGo5pyf5YWD57Sg44CC
 - 答案:RA==
							Qe+8jkxp5Li656ys5LqM5ZGo5pyf56ys4oWgQeWFg+e0oO+8jOWNs+S4uuefreWRqOacn+S4u+aXj+WFg+e0oO+8jOaVhUHkuI3pgInvvJs8YnI+Qu+8jlDkuLrnrKzkuInlkajmnJ/nrKzihaRB5peP5YWD57Sg77yM5Y2z5Li655+t5ZGo5pyf5Li75peP5YWD57Sg77yM5pWFQuS4jemAie+8mzxicj5D77yORmXkuLrnrKzlm5vlkajmnJ/ihaTihaLml4/lhYPntKDvvIzkuI3mmK/kuLvml4/lhYPntKDvvIzmlYVD5LiN6YCJ77ybPGJyPkTvvI5CcuS4uuesrOWbm+WRqOacn+KFpOKFoUHml4/lhYPntKDvvIzkuLrplb/lkajmnJ/kuLvml4/lhYPntKDvvIzmlYVE6YCJ77ybPGJyPuaVhemAiUTvvI4=
 
本课配套习题挑战模式2/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    2.某元素的原子结构示意图为:
,则该元素在元素周期表中的位置                                
                                                                    
                            | A: 第二周期,第ⅠA族 | 
| B: 第二周期,第ⅤA族 | 
| C: 第三周期,第ⅣA族 | 
| D: 第三周期,第ⅤA族 | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:5ZGo5pyf5piv5oyJ54Wn5Y6f5a2Q5qC45aSW55qE55S15a2Q5bGC5pWw5p2l5o6S5biD44CC
 - 提示2:5peP5bqP5pWw5oyJ54Wn5pyA5aSW5bGC55S15a2Q55qE5Liq5pWw5p2l5o6S5biD44CC
 - 答案:RA==
							55SxM+S4queUteWtkOWxgu+8jOWkhOS6juesrOS4ieWRqOacn++8jOacgOWkluWxgueUteWtkOaVsOS4ujXvvIzlpITkuo7ihaRB5peP77yM5pWF6K+l5YWD57Sg5aSE5LqO56ys5LiJ5ZGo5pyf56ys4oWkQeaXj++8jOaVhemAiUTvvI4=
 
本课配套习题挑战模式3/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    3.元素性质呈周期性变化的根本原因是                                
                                                                    
                            | A: 核外电子排布呈周期性变化 | 
| B: 元素的相对原子质量逐渐增大 | 
| C: 核电荷数逐渐增大 | 
| D: 元素化合价呈周期性变化 | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:5Yaz5a6a5YWD57Sg5YyW5a2m5oCn6LSo55qE5Li76KaB5Zug57Sg5piv5YWD57Sg55qE5qC45aSW55S15a2Q5pWw44CC
 - 答案:QQ==
							5qC45aSW55S15a2Q5ZGI5ZGo5pyf5oCn5Y+Y5YyW77yM5a+86Ie05YWD57Sg55qE5YyW5a2m5oCn6LSo5Lmf5ZGI5ZGo5pyf5oCn5Y+Y5YyW44CC
 
本课配套习题挑战模式4/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    4.下列说法中正确是                                
                                                                    
                            | A: 周期表是按原子量逐渐增大的顺序从左到右排列的 | 
| B: 最外层电子数相同的元素都是同一族 | 
| C: 同族元素原子的最外层电子数一定相同 | 
| D: 同周期元素原子的电子层数相同 | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:5ZCM5LiA5ZGo5pyf5piv5oyJ54Wn5qC455S16I235pWw5LuO5bem5ZCR5Y+z5o6S5biD55qE44CC
 - 提示2:6KaB5rOo5oSP6Zu25peP5YWD57Sg5ZKM6L+H5bqm6YeR5bGe6YOo5YiG55qE54m55q6K5oCn44CC
 - 答案:RA==
							QeOAgeWQjOS4gOWRqOacn+WFg+e0oOaMieaguOeUteiNt+aVsOmAkOa4kOWinuWkp+eahOmhuuW6j+S7juW3puWIsOWPs+aOkuWIl++8jOaVhUHplJnor6/vvJs8YnI+QuOAgeawpuS4jumVgeacgOWkluWxgueUteWtkOaVsOmDveS4ujLvvIzmiYDlpITml4/kuI3lkIzvvIzov5jopoHms6jmhI/ov4fluqbph5HlsZ7nmoTmnIDlpJblsYLnlLXlrZDpg73mmK/lsI/kuo4055qE44CC5pWFQumUmeivr++8mzxicj5D44CB6Zu25peP5YWD57Sg5Lit5rCm5pyA5aSW5bGC55S15a2Q5pWw5Li6Mu+8jOWFtuWug+WFg+e0oOS4ujjvvIzmlYVD6ZSZ6K+v77yMPGJyPkTjgIHlsIbnlLXlrZDlsYLmlbDnm7jlkIznmoTlhYPntKDmjpLmiJDkuIDkuKrmqKrooYzljbPkuLrlkajmnJ/vvIzmlYVE5q2j56Gu77yOPGJyPuaVhemAiUTvvI4=
 
本课配套习题挑战模式5/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    5.A、B两主族元素属于同一周期,它们的原子能以共价键结合成化学式为AB2型分子,A、B元素在周期表中的族序数可能为                                
                                                                    
                            | A: ⅠA、ⅤA | 
| B: ⅠA、ⅦA | 
| C: ⅣA、ⅥA | 
| D: ⅡA、ⅦA | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:5LuOQUI8c3ViPjI8L3N1Yj7lnovliIblrZDlj6/ku6XmjqjmtYvmlbDnmoTkv6Hmga/mmK/vvIxB5Li65q2j5Lu377yMQuS4uui0n+S7t++8jOW5tuS4lEHnmoTljJblkIjku7fmlbDlgLzmmK9C55qE5LqM5YCN44CC
 - 答案:Qw==
							5YyW5a2m5byP5Li6QUI8c3ViPjI8L3N1Yj7lnovnmoTliIblrZDkuK3vvIxB55qE5YyW5ZCI5Lu35Y+v6IO95Li6KzLmiJYrNOS7t++8jELnmoTljJblkIjku7flj6/og73kuLotMeaIli0y5Lu377yM5YiZPGJyPkHvvI7ihaBB5peP55qE5YyW5ZCI5Lu35Li6KzHku7fvvIzihaRB5peP55qE5YyW5ZCI5Lu35Y+v6IO95Li6KzXku7fmiJYtM+S7t++8jOS6jOiAheW9ouaIkOeahOWMluWQiOeJqeS4ukJBPHN1Yj4zPC9zdWI+77yM5pWFQemUmeivr++8mzxicj5C77yO4oWgQeaXj+eahOWMluWQiOS7t+S4uisx5Lu377yM4oWmQeaXj+eahOWMluWQiOS7t+WPr+iDveS4uis35Lu35oiWLTHku7fvvIzkuozogIXlvaLmiJDnmoTljJblkIjniankuLpBQu+8jOaVhULplJnor6/vvJs8YnI+Q++8juKFo0Hml4/nmoTljJblkIjku7flj6/og73kuLorMuaIlis05Lu377yM4oWlQeaXj+eahOWMluWQiOS7t+WPr+iDveS4uis044CBKzbku7fmiJYtMuS7t++8jOS6jOiAheW9ouaIkOeahOWMluWQiOeJqeiDveS7peWFseS7t+mUrue7k+WQiOaIkOWMluWtpuW8j+S4ukFCPHN1Yj4yPC9zdWI+5Z6L5YiG5a2Q77yM5aaCQ088c3ViPjI8L3N1Yj7jgIFDUzxzdWI+Mjwvc3ViPu+8jOaVhUPmraPnoa7vvJs8YnI+RO+8juKFoUHml4/nmoTljJblkIjku7fkuLorMuS7t++8jOS4uumHkeWxnuWFg+e0oO+8jO+8jOKFpkHml4/nmoTljJblkIjku7flj6/og73kuLorN+S7t+aIli0x5Lu377yM5LqM6ICF6IO95b2i5oiQ5YyW5a2m5byP5Li6QUI8c3ViPjI8L3N1Yj7lnovnianotKjvvIzkvYbkuLrnprvlrZDljJblkIjnianvvIzku6XnprvlrZDplK7nu5PlkIjvvIzmlYVE6ZSZ6K+v77yOPGJyPuaVhemAiUPvvI4=
 
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