The group number is an identifier used to describe the column of the standard periodic table in which the element appears.Groups 1-2 termed s-block elements.Groups 1-2 (except hydrogen) and 13-18 are termed main group elements.Groups 3-12 are termed d-block elements....
good table 意为“精美的餐食”,“美食”。最新单词 Clarke s column的中文释义 背核 Clarke's cell是什么意思 脊髓背核色素细胞 clark's alloy的中文解释 克拉克合金 Clark process的中文释义 克拉克法 Clark number怎么翻译及发音 克拉克数 Clark degree的中文解释 英制硬度 Clark cycle是什么意思及反义...
Group_(periodic_table)Group (periodic table)Family
Question: What is the group number in the periodic table of X, a representative element, in each of the following ionic compounds. 1. X2O3 2. X2SO3 3. Na3X Representative elements: Representative elements involve the filling...
:an assemblage of elements forming one of the vertical columns of theperiodic table c :a bed or layer of rocks deposited during an era 4 :a mathematical set that is closed under a binary associative operation, contains an identity element, and has an inverse for every element ...
8 Silicon is an element in Group IV of the Periodic Table.(a) One of the isotopes of silicon is:Si Deduce the number of electrons, neutrons and protons in one atom of this isotope of silicon.14number of electrons16number of neutrons...14number of protons...3](b)Silicon reacts ...
21 Elements X and Y are in the same Group of the Periodic Table.Which statement must be correct? A A Atoms X and Y have similar electronic structure. B Atoms X and Y have the same physical properties. C If X has a smaller proton number than Y, it is less metallic. D The number ...
Answer to: Refer to the periodic table and give the period and group number for each of these elements: (a) neon (b) barium (c) iodine By signing...
Groups and periods are two ways of categorizing elements in the periodic table. Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases as you move down a group or across a period. ...
aCertain groupings of elements in the periodic table are designated by special names. The heavy, stepped, diagonal line on the table divides the elements into two major classed. Those to the left of the line are called metals, and those to the right, nonmetal. GroupⅠA elements are known...