Materials Science deals with the relationship between the macroscopic properties and the microscopic structures
Materials Science deals with the relationship between the macroscopic properties and the microscopic structures
Crapter Atomic Structure and Bonding §1.1 Atomic structure Atomic numbers and atomic masses 1. Atomic models M-shell 1 Electron L-Shell 2 Electrons K-Shell 2 Electrons Nucleus 11 Protons 12 Neutrons
§1.1 Atomic structure ◆ Ⅰ.Atomic numbers and atomic masses 1. Atomic Models Chapter I Atomic Structure and Bonding
2. Atomic numbers The atomic number of an atom indicates the number of protons(positively charged particles Which are in its nucleus, and in a neutral atom the atomic number is also equal to the number of electrons in its charge cloud All the elements have been classified according to electron configuration in the periodic table
2. Atomic numbers The atomic number of an atom indicates the number of protons (positively charged particles) which are in its nucleus, and in a neutral atom the atomic number is also equal to the number of electrons in its charge cloud. All the elements have been classified according to electron configuration in the periodic table
The per iodic tabI 碱金属碱土金属过渡元素 I H 主族金属非金属稀有气体 ⅢIA IVAAAA 2LiBe 轻稀土金属重稀土金属贵金属 BCNOFNe 3 Na MgIB VB VIBVIIBⅦB IBIB Al Si CIAr 4K Ca Sc Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te Xe 6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg TI Pb Bi Po At Rn 7 Fr Ra Ac Rf Db Sg Bh Hs Mt Uun Uuu Uub 系 山ck Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Lu 钢系 Ac Th Pa U N Np Pu Am Cm Bk Cf Es Fm Md NO LI
The periodic table IA 碱金属 碱土金属 过渡元素 0 1 H IIA 主族金属 非金属 稀有气体 IIIA IVA VA VI A VII A He 2 Li Be 轻稀土金属 重稀土金属 贵金属 B C N O F Ne 3 Na Mg IIB IVB VB VIB VIIB VIIB IB IIB Al Si P S Cl Ar 4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 7 Fr Ra Ac Rf Db Sg Bh Hs Mt Uun Uuu Uub 镧系 La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 锕系 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
3. Atomic mass The relative atomic mass of an element is the mass in grams of 6.023 X 1023 atoms(Avogadro's number NA) of that element
3. Atomic mass The relative atomic mass of an element is the mass in grams of 6.023×1023 atoms (Avogadro’s number NA ) of that element