本课配套习题挑战模式1/5
单选题
难度系数:
1.下列说法中错误的是
A: 所有的原子核都由质子和中子构成 |
B: 铅笔芯里含有石墨 |
C: 氢氧化钠固体可以干燥氧气 |
D: 分子、原子都在不断地运动着 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rCi5Y6f5a2Q5Lit5peg5Lit5a2Q44CC
- 提示2:5rOo5oSP6ZOF56yU6Iqv5Lit55qE5oiQ5YiG5piv55+z5aKo77yM5bm26Z2e6ZOF44CC
- 答案:QQ==
QeOAgeacieeahOWOn+WtkOaguOS4reayoeacieS4reWtkO+8jjxicj5C44CB6ZOF56yU6Iqv5Li76KaB5piv55Sx55+z5aKo44CB57KY5Zyf562J54mp6LSo57uE5oiQ77yOPGJyPkPjgIHmsKLmsKfljJbpkqDlm7rkvZPlrrnmmJPlkLjmlLbmsLTvvIzlj6/ku6XlubLnh6XmsKfmsJTvvI48YnI+ROOAgeW+ruingueykuWtkOmDveaYr+S4jeaWrei/kOWKqOeahO+8jjxicj7mlYXpgIlB
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列有关原子的说法中,正确的是
A: 所有原子的原子核都是由质子和中子构成的 |
B: 由于原子中的质子所带的正电荷总量等于电子所带的负电荷总量,所以整个原子不显电性 |
C: 原子的质量主要集中在原子核上,电子没有质量 |
D: 碳原子的原子核内有12个质子 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rCi5Y6f5a2Q5Lit5rKh5pyJ5Lit5a2Q44CC
- 提示2:55S15a2Q55qE6LSo6YeP5b6I5bCP77yM5L2G5bm26Z2e5rKh5pyJ6LSo6YeP
- 提示3:6LSo5a2Q5pWw562J5LqO5Y6f5a2Q5bqP5pWw77yM56Kz5Y6f5a2Q5Li656ysNuWPt+WFg+e0oOOAgg==
- 答案:Qg==
QeOAgeawouWOn+WtkOaguOWGheayoeacieS4reWtkO+8jOaVheivtOazlemUmeivr++8mzxicj5C44CB5Y6f5a2Q5piv55Sx5Y6f5a2Q5qC45ZKM5qC45aSW55S15a2Q5p6E5oiQ55qE77yM5Y6f5a2Q5qC45piv55Sx6LSo5a2Q5ZKM5Lit5a2Q5p6E5oiQ55qE77yM5LiA5Liq6LSo5a2Q5bim5LiA5Liq5Y2V5L2N5q2j55S16I2377yM5Lit5a2Q5LiN5bim55S177yM5Zyo5Y6f5a2Q5YaF77yM5qC45YaF6LSo5a2Q5pWw562J5LqO5qC45aSW55S15a2Q5pWw77yM5LiA5Liq55S15a2Q5bim5LiA5Liq5Y2V5L2N6LSf55S16I2377yM5omA5Lul5Y6f5a2Q5qC45omA5bim55S16YeP5ZKM5qC45aSW55S15a2Q5omA5bim55qE55S16YeP55u4562J77yM55S15oCn55u45Y+N77yM5omA5Lul5pW05Liq5Y6f5a2Q5LiN5pi+55S15oCn77yM5pWF6K+05rOV5q2j56Gu77ybPGJyPkPjgIHljp/lrZDnmoTotKjph4/kuLvopoHpm4bkuK3lnKjljp/lrZDmoLjkuIrvvIzkvYbnlLXlrZDkuI3mmK/msqHmnInotKjph4/vvIzogIzmmK/otKjph4/lvojlsI/vvIzlj6/ku6Xlv73nlaXkuI3orqHvvIzmlYXor7Tms5XplJnor6/vvJs8YnI+ROOAgeeis+aYrzblj7flhYPntKDvvIzlhbbljp/lrZDmoLjlhoXmnIk25Liq6LSo5a2Q77yM5pWF6K+05rOV6ZSZ6K+v77ybPGJyPuaVhemAiULvvI4=
本课配套习题挑战模式3/5
单选题
难度系数:
3.我国的“神舟七号”载人飞船己发射成功,“嫦娥”探月工程又获得了一次重大的突破.据科学家预测,月球的土壤中吸附着数百万吨的氦-3,每百吨氦-3核聚变所释放出的能量相当于目前人类一年消耗的能量.在地球上,氦元素主要以单质的形式存在.下列说法不正确的是
A: 原子核内含有2个质子 |
B: 原子核外电子数为2 |
C: 原子核内含有1个中子 |
D: 最外层电子数为2,所以容易失去2个电子 |
一次做对,真牛!
+5奖励规则>
- 提示1:6LSo5a2Q5pWwPeaguOWklueUteWtkOaVsD3ljp/lrZDluo/mlbA=
- 提示2:5Lit5a2Q5pWwPei0qOmHj+aVsC3otKjlrZDmlbA=
- 提示3:5rCm5piv5LiA56eN56iA5pyJ5rCU5L2T77yM5oCn6LSo56iz5a6a44CC6aKY5bmy5Lit5pyJ5L+h5oGv4oCc5Li76KaB5Lul5Y2V6LSo55qE5b2i5byP5a2Y5Zyo4oCd77yM5LiN5a655piT5aSx55S15a2Q44CC
- 答案:RA==
SGUtM+S4reeahOaVsOaNrjPmmK/mjIfnm7jlr7nljp/lrZDotKjph4/vvIznm7jlr7nljp/lrZDotKjph4896LSo5a2Q5pWwK+S4reWtkOaVsO+8jOawpuWOn+WtkOeahOi0qOWtkOaVsOaYrzLvvIzmiYDku6XkuK3lrZDmlbDmmK8x77yM5qC45aSW55S15a2Q5pWwPei0qOWtkOaVsO+8jOaVheaguOWklueUteWtkOaVsOS5n+S4ujLvvJvmsKbljp/lrZDmoLjlpJblj6rmnInkuIDkuKrnlLXlrZDlsYLmnIDlpJrlj6rog73lrrnnurPkuKTkuKrnlLXlrZDvvIzkuJTmnInkuKTkuKrnlLXlrZDvvIzmmK/kuIDkuKrnqLPlrprnmoTnu5PmnoTvvIzkuI3mmJPlpLHnlLXlrZDvvJs8YnI+5pWF6YCJRO+8jg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.我国著名科学家、中国科学院院士张青莲教授主持测定了铟、铱、锗、铕、镝等元素相对原子质量的新值.其中,测定核电荷数为63的铕元素的原子的相对原子质量为152.该元素原子的中子数为
A: 89 |
B: 26 |
C: 126 |
D: 63 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Zyo5Y6f5a2Q5LitIOi0qOWtkOaVsD3moLjnlLXojbfmlbA95qC45aSW55S15a2Q5pWw
- 提示2:55u45a+55Y6f5a2Q6LSo6YeP4omI6LSo5a2Q5pWwK+S4reWtkOaVsA==
- 答案:QQ==
5Zyo5Y6f5a2Q5Lit6LSo5a2Q5pWwPeaguOeUteiNt+aVsD3moLjlpJbnlLXlrZDmlbDvvIzpk5XlhYPntKDnmoTmoLjnlLXojbfmlbDkuLo2M++8jOWImeWFtui0qOWtkOaVsOS4ujYz77yM5Y+I5Zug5Li655u45a+55Y6f5a2Q6LSo6YeP4omI6LSo5a2Q5pWwK+S4reWtkOaVsO+8jOmTleWFg+e0oOeahOWOn+WtkOeahOebuOWvueWOn+WtkOi0qOmHj+S4ujE1Mu+8jOWImeS4reWtkOaVsOS4ujE1Mi02Mz04Oe+8jjxicj7mlYXpgIlB77yO
本课配套习题挑战模式5/5
单选题
难度系数:
5.我市桃花江核电站已获得国家发改委正式批准开展前期工作.核电站常用的某种核原料的原子中含一个质子二个中子.对于该原子,下列说法正确的是
A: 该原子核电荷数为2 |
B: 该原子是一种氢原子 |
C: 该原子核外有2个电子 |
D: 该原子核带3个单位正电荷 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Zyo5Y6f5a2Q5Lit77yM6LSo5a2Q5pWwPeaguOeUteiNt+aVsD3moLjlpJbnlLXlrZDmlbA=
- 提示2:5Yik5pat5Y6f5a2Q55qE56eN57G75Y+q6ZyA6KaB5qC55o2u5LuW55qE6LSo5a2Q5pWw5Lmf5bCx5piv5Y6f5a2Q5bqP5pWw56Gu5a6a5Y2z5Y+v44CC
- 提示3:5Zyo5Y6f5a2Q5Lit77yM5Y+q5pyJ6LSo5a2Q5piv5bim5q2j55S155qE44CC5Zug5q2k5pyJ5Yeg5Liq6LSo5a2Q77yM5bCx5bim5Yeg5Liq5Y2V5L2N55qE5q2j55S16I2344CC
- 答案:Qg==
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