Question

use the periodic table to select the element that best fits each of the following descriptions. which solution below most likely shows a vivid color? potassium chloride nickel chloride hydrogen chloride lithium chloride which two elements most likely have the most similar properties? beryllium and boron scandium and silicon nitrogen and phosphorus hydrogen and helium

Explanation:

1. For the first - part, nickel chloride often shows vivid colors in solutions due to the presence of nickel ions which can have different oxidation states and coordination complexes that absorb and reflect light in the visible spectrum. Other chlorides like potassium chloride, hydrogen chloride, and lithium chloride are typically color - less in solution under normal conditions.
2. For the second - part, elements in the same group of the periodic table have similar chemical properties. Nitrogen and phosphorus are both in Group 15 of the periodic table. Beryllium is in Group 2 and boron is in Group 13, scandium is in Group 3 and silicon is in Group 14, hydrogen is in Group 1 and helium is in Group 18.

Answer:

1. nickel chloride
2. nitrogen and phosphorus