There are more elements and it's organized differently
Chemists in the early 1900s made changes to Mendeleev's periodic table by rearranging elements based on their atomic number instead of atomic mass, leading to the development of the modern periodic table. This change accurately emphasized the relationship between an element's properties and its atomic number, rather than its atomic mass, and helped to better organize the elements.
Metals are typically shiny, malleable, and good conductors of heat and electricity. They are found on the left side of the periodic table. Non-metals, on the other hand, are usually dull, brittle, and poor conductors. They are located on the right side of the periodic table.
The bond length between hydrogen and halogens decreases as you move down the halogen group on the periodic table. This is due to the increase in atomic size and electron shielding, leading to weaker hydrogen-halogen bonds. Additionally, bond length tends to increase in strength as you move left to right across the periodic table due to increasing electronegativity.
The periodic table created by Mendeleev in 1869 was based on atomic mass and grouped elements with similar properties together. Moseley improved upon this by arranging elements based on atomic number, leading to the modern periodic table where elements are arranged in order of increasing atomic number, which is the number of protons in the nucleus. This organization better reflects the physical and chemical properties of elements.
The periodic table is divided into blocks based on the electron configurations of the elements. The main blocks are s, p, d, and f. Similarities: Elements within the same block have similar chemical properties. Elements in the same block have the same number of valence electrons. Differences: The s-block elements are in groups 1 and 2, the p-block elements are in groups 13-18, and the d-block elements are in groups 3-12. The f-block elements are the lanthanides and actinides, which are placed below the main body of the periodic table.
describe differences between northbridge and southbridge?
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Gases and metals
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describe the differences between intravenous fluid and blood
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Repetitive motion means the action is repeated again after a brief period of time where as periodic motion means it repeats after a fixed period of time.
Among other differences, Judaism is monotheistic.
Sub species , varieties .
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