英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
allotropes查看　allotropes　在百度字典中的解释百度英翻中〔查看〕
allotropes查看　allotropes　在Google字典中的解释Google英翻中〔查看〕
allotropes查看　allotropes　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Allotropes - BYJUS
    Allotropes Allotropes are defined as the structural modifications of an element, that is, they are different forms of the same element This happens due to the different bonding of the atoms which are arranged in sequence, thus forming a new structure These structures possess different chemical and physical properties
  • What Are the Allotropes of Carbon? - BYJUS
    Carbon nanotubes: Allotropes of carbon with a cylindrical nanostructure Let us now take a look into the more widely known allotropes of carbon: Graphite It is a pure form of carbon This allotrope of carbon is composed of flat two-dimensional layers of carbon atoms, which are arranged hexagonally It is a soft, black and slippery solid
  • What is an Allotrope? - BYJUS
    Allotropes are different forms of the same element, where the atoms combine in different ways, so at the same temperature and pressure they can exist in different forms The most striking allotropes are of carbon in the forms of diamond and graphite
  • Introduction to Sulphur And Its Allotropic Forms - BYJUS
    Introduction to Sulphur And Its Allotropic Forms This topic focuses on Sulphur and its allotropic forms In the periodic table sulphur is found in group 16 0 17 % of earth’s crust consists of sulphur It is a non-metal and is obtained as a by-product after the production of natural gas Table of Contents The Allotropes of Sulphur Rhombic sulphur (α-sulphur) Monoclinic sulphur (β-sulphur
  • Chemical Properties of Tin - BYJUS
    Allotropes of Tin (Sn element) The three allotropes of tin are Grey tin (cubic), white tin (tetragonal) and white tin (rhombic) When white tin converts to grey tin, an increase in volume takes place White tin is an ordinary form, silver-white in colour and harder than lead White tin is highly malleable and ductile
  • Name the three crystalline allotropes of carbon. - BYJUS
    Allotropes: Allotropes are different physical forms in which an element can exist So at the same temperature and pressure, they can exist in different forms Carbon (C) has these 3 crystalline allotropes: Diamond, Graphite and Fullerene All these three forms exist as a crystal, not molecules
  • Define allotropy. - BYJUS
    Define allotropy The ability of an element to exist in more than one physical forms having same physical state is called as allotropy The various existing forms having same physical state, exhibiting identical chemical properties but different physical properties are called as allotropic forms For example; Diamond and Graphite are the allotropic forms of carbon Few other elements which
  • What are Carbon and its Compounds? - BYJUS
    These allotropes are all based on carbon atoms but exhibit different physical properties, especially with regard to hardness The common, crystalline allotropes of carbon are Diamond, Graphite, Graphene, Fullerene ( C60), and Carbon nanotubes Carbon shows allotropy because it exists in different forms of carbon such as diamond, and graphite
  • Position of Hydrogen in Periodic Table - BYJUS
    Properties of Hydrogen Isotopes of Hydrogen Allotropes of Hydrogen Different Forms of Hydrogen Methods of Preparation of Hydrogen Chemical Reactions of Hydrogen Uses of Hydrogen Hydrogen, even though it is present in large quantities, is rarely found in its naturally free state It is mostly found in chemical compounds where it is bonded to
  • Structure of Fullerene - BYJUS
    Fullerene is nothing but an allotrope of carbon wherein its molecules consist of carbon atoms that are connected by single and double bonds This results in the formation of a closed or partially closed cage-like structure (a mesh consisting of fused rings) that further contain several atoms The fullerene molecule in this form can either have a hollow sphere, be it an ellipsoid, a tube, or it





中文字典-英文字典  2005-2009