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  1. ... are simple molecules... so they have van der waal's forces ... 4.helium is insert ,but why can still join with other elements? Ans: Assuming He is...

    分類:科學及數學 > 化學 2008年06月08日

  2. ...two molecules are joined together. It is not an intermolecular force , it is a term for ..., the van der Waals' forces (dispersion forces ) between one...

    分類:科學及數學 > 化學 2012年01月24日

  3. ...structure, there are van der Waals’ forces between the layers of atoms. Graphite...layer structure. In graphite, the carbon atoms joined together in a triangular shape with three carbon atoms...

    分類:科學及數學 > 化學 2008年03月23日

  4. ..., C atoms are joined together by strong covalent bonds to form layers... held together by van der Waals’ forces . 圖片參考:http://www.geocities.com/...

    分類:科學及數學 > 化學 2008年05月03日

  5. ...undergo polymerization, forming a permanent cross linkage with the surface you want to join them together. Is it related to the intermolecular force between the molecules on the surfaces? No. The intermolecular...

    分類:科學及數學 > 化學 2008年04月21日

  6. ... is only weak van de waals force . so the melting point is low. melting...in the case of diamond, the carbon atoms are joined together by giant covalent bond. so when it is to be...

    分類:科學及數學 > 化學 2008年04月01日

  7. In graphite, carbon atoms are joined together by strong covalent bonds to form ... together by weak van der Waals' forces , and the layers can easily slip between each...

    分類:科學及數學 > 化學 2010年05月04日

  8. ... join 住佢地3粒變做1個molecule,之後有1種 force 叫 van der Waals' forces 將每粒carbon dioxide molecule join 埋1齊變成carbon dioxide e個compound. 圖片參考:http://imgcld.yimg.com/8/n/...

    分類:科學及數學 > 化學 2011年11月13日

  9. ...39;s force . 所以佢地有 low b.p. 同 m.p. 但 giant covalent structure 就係好多粒 join 埋一齊 佢地無 Van der Waal's force .而係成舊都 bond by covalent bond. 所以佢地有 very high b.p. 同 m.p. 2009-11...

    分類:科學及數學 > 化學 2009年11月18日

  10. .... Two identical halogen atoms are joined together with strong covalent bonds to form a halogen... together by weak van der Walls' forces . The stronger the van der Waals...

    分類:科學及數學 > 化學 2009年01月11日