1、Elements 1 Hydrogen 氢氢1 H:period 1,group IA/1,nonmatel原子量 1.00794电离能 1312.0 eV 电负性 2.20氧化态 +1,-1电子构型 1s1原子半径 0.79 离子半径 0.012 熔点 -258.975C沸点 -252.732C氢是一种化学元素,在元素周期表中位于第一位。氢通常的单质形态是氢气。它是无色无味无臭,极易燃烧的由双...
Periodic Table概述 Elements 1Hydrogen 氢 1H:period1,groupIA/1,nonmatel 原子量1.00794电离能1312.0eV电负性2.20氧化态+1,-1电子构型1s1原子半径0.79Å离子半径0.012Å熔点-258.975︒C沸点-252.732︒C氢是一种化学元素，在元素周期表中位于第一位。氢通常的...
Explanation of the structure of the periodic table The number of electron shells an atom has determines what period it belongs to. Each shell is divided into different subshells, which as atomic number increases are filled in roughly this order: 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f ...
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p 8s In the s-block and p-block of the periodic table, elements within the same period generally do not exhibit trends and similarities in properties (vertical trends down groups are more significant). However in the d-block...
元素周期表Periodictableofelements 系统标签: 周期表elementsperiodiciibiiib 元素周期表(Periodictableofelements)1氢H10081The1S^12氦I4003101S^23锂Li6.9412The2S^14铍BE90122IIa2S^25硼B10.812IIIa1/2P^2s^26碳C12.012VAT2P^2s^2/27氮N14.012Will2P^2s^2/38氧Or42Via2P^2s^2/49氟F19.002VIIa2P^2s^2/...
periodic-table-元素周期表GROUP 1 IA 1 1.00794 Periodic Table of the Elements Atomic Number Symbol 18 VIIIA 2 4.002602 H 1 2 1 0.0899 -259.14 37 Hydrogen S1/2 2.2 13.5984 -252.87 120 1 1s +1,-1 2 IIA 4 9.012182 3 Name Hydrogen *Density [Note] 0.0899 13.5984 ...
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In chemistry, s-block refers to a group of elements on the periodic table that all have their valence electrons occupying the same electron orbital, the s-orbital. S-block elements include hydrogen and helium, and alkali metals and alkaline earth metals. Which elements belongs to s-block? The...
Mendeleev's Periodic Table was not well received at first, but was shortly helped by the discovery of the element gallium, which filled such a gap and had nearly exactly the atomic weight, density, and valency predicted. Other affirmations followed. It is for these reasons that Mendeleev is ...
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