<span>How does the modern Periodic Table of the Elements differ from Mendeleev's chart?</span>
Dmitri Mendeleev's periodic table<span> featured </span>elements<span> arranged in accordance with their atomic mass, while the </span>modern table<span> has </span>elements<span> arranged according to </span>periodic<span> number. </span>Mendeleev's periodic table<span> also had the </span>elements<span> arranged vertically, whereas the </span>modern table<span> has them arranged horizontally.
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Answer:A model may improve as scientific advancements are made, is the correct statement. As new information becomes available, the model may become more accurate or improved.
Explanation:
Answer:
0.5 moles of LiOH will absorb 5.6 L of
Explanation:
According to law of conservation of mass, the sum of mass on the reactant side must be equal to the sum of mass on product side.
The balanced chemical equation is:
2 moles of LiOH absorb 1 mole of i.e. 22.4 Liters at STP
0.5 moles of LiOH absorb
=
0.5 moles of LiOH will absorb 5.6 L of
Answer:
e. Na, Fe, K
Explanation:
The group of elements that will be positive charge ions is metal. You can find metal in the first 2 columns of the periodic table and in the transition area. Natrium/sodium (Na), iron (Fe), and kalium/potassium(K) categorized as metal and they will form positive charge ions.
On the other hand carbon(C), oxygen (O), arsenic(As) and bromine(Br) is gas and will form negative charge ions. Gas located on the right side of the periodic table.