门捷列夫和莫斯利周期之间的区别Table

Key Difference – Mendeleev vsMoseleyPeriodic Table

The periodic table ofelementsis the arrangement of all the known chemical elements in a table that represent their periodic trends. The chemical elements are arranged based on theiratomic numbers。这些化学元素可以以不同的方式进行分类。作为metals, non-metals和metalloids,s block, p block和d block elements。The very first organized periodic table was proposed by Mendeleev in 1869. But the modern periodic table that we use was proposed by Henry Moseley in 1913. Thekey differencebetween Mendeleev and Moseley periodic table is thatMendeleev periodic table is created based on the atomic masses of chemical elements whereas Moseley periodic table is created based on the atomic numbers of chemical elements.

内容

1.Overview and Key Difference
2.What is Mendeleev Periodic Table
3.What is Moseley Periodic Table
4.Side by Side Comparison – Mendeleev vs Moseley Periodic Table in Tabular Form
5.概括

What is Mendeleev Periodic Table?

Mendeleev周期表由Dimitri Mendeleev于1869年提出。这是基于其原子质量的化学元素的表格排列。该元素周期表还表明，化学和物理性质与化学元素的原子质量之间存在关系。在他的周期表中，具有相似特性的化学元素在相同的垂直柱中。

In that time, there were only 56 known elements. The first and foremost periodic table created by Mendeleev was a very small table containing only 9 chemical elements. then he proposed the extended periodic table with some gaps in periods “horizontal rows”. He assumed that those chemical elements have not been discovered yet.

Apart from that, Mendeleev attempted to determine the atomic masses of missing chemical elements and to predict their properties. Most of the chemical elements he predicted were turned to be correct after the discovery of them.

What is Moseley Periodic Table?

The well-organized periodic table containing chemical elements arranged based on their atomic numbers was first proposed by Henry Gwyn Jeffreys Moseley in 1913. This periodic table shows the following groups;

• 碱金属(group 1)
• Halogens（第7组）
• Noble gases(group 8)
• Transition metals

Before this prediction, the atomic number of a chemical element was considered as a semi-arbitrary number that is sequential based on the sequence of atomic mass. But the discovery of Henry Moseley demonstrated that the atomic number is not just an arbitrary number, it has a strong experimental basis of physics.

Mendeleev和Moseley周期表有什么区别？

Mendeleev vs Moseley Periodic Table
Mendeleev Periodic Table was proposed by Dimitri Mendeleev in 1869.	The well-organized periodic table containing chemical elements arranged based on their atomic numbers was first proposed by Henry Gwyn Jeffreys Moseley in 1913.
安排
The Mendeleev periodic table has chemical elements arranged based on their atomic masses.	The Moseley periodic table has chemical elements arranged based on their atomic numbers.
作品
Mendeleev periodic table had only 56 chemical elements.	Moseley周期表有74个化学元素。

概括–Mendeleev vsMoseleyPeriodic Table

The development of modern periodic table was not a single step development and it has many improvements time after time. The first well-arranged periodic table was proposed by Dimitri Mendeleev in 1869. Then the key to the modern periodic table was proposed by Henry Moseley in 1913. The difference between Mendeleev and Moseley periodic table is that Mendeleev periodic table is created based on the atomic masses of chemical elements whereas Moseley periodic table is created based on the atomic numbers of chemical elements.

Reference:

1.“周期表。”Wikipedia，Wikimedia基金会，2018年2月25日。Available here
2. Moseley的周期表。Available here
3.“亨利·莫斯利。”Wikipedia，Wikimedia基金会，2018年2月20日。Available here

Image Courtesy:

1.’Dmitri Mendeleev’By unknown (Public Domain) viaCommons Wikimedia