Answer:
the modals of arrangement for first periodic table was. increasing atomic mass and grouping together of elements having similar properties
Answer:
The atomic mass of nitrogen is
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14.0067 u</h2>
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<em>You learn more from failure than from success</em></h2>
Answer:
it is metals, it is the most prominent type of element on the table
Answer:
lithium, sodium, rubidium, cesium, and francium.
Potassium is one of the alkali metals. The alkali metals are the elements that make up Group 1 (IA) of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another.