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8 solutions

Periodic Table

Q. In the Chemistry Videos, it's said that everything to the right of the metals/metalloids are non-metals, but then the 1A group is named Alkali Metals? Why is their group name a metal but their classification isn't one (Notwithstanding H, which is an exception)?

Solved • Aug 8, 2019

Periodic Table

Q. 4. Identify whether each of the following substances will form ions or molecules in an aqueous solution. You may assume that all of the substances are highly soluble water.

Solved • Jun 25, 2019

Periodic Table

Q. Which list gives nonmentals found in their elemental forms in nature? (A) neon, phosphorous, fluorine (B) helium, hydrogen, iodine (C) nitrogen, oxygen, sulfur (D) oxygen, chlorine, phosphorus

Solved • Apr 20, 2019

Periodic Table

Q. Many of the elements listed in the modern periodic tables were not known to Mendeleev. Use the periodic table in your text to identify four other situations comparable to the situation of Co and Ni.

Solved • Apr 10, 2019

Periodic Table

Q. Use the periodic table to determine the trend in atomic mass within a group. Give an example using the elements from any particular group.

Solved • Apr 3, 2019

Periodic Table

Q. Of the following four elements: Al, Pb, Cl, Se, Classify. Category 1: Tend to lose electrons. OR Category 2: Tend to gain electrons.

Solved • Apr 1, 2019

Periodic Table

Q. Which of the following have the same number of valence electrons? He, Ne, F or N, As, Bi or B, Si, As or Li, N, F.

Solved • Apr 1, 2019