Is the erbium transparent, translucent or opaque?
1 answer:
Objects that allow all of the light to pass through them is said to be transparent. One can clearly see through the transparent objects. Objects that allow only some light to pass through them is said to be translucent. One can partially see through the translucent objects whereas objects that do not allow any light to pass through them is said to be opaque. One cannot see through the opaque objects at all.
Erbium is a chemical element with atomic symbol, which belongs to the period 6 with atomic number 68. It is a lanthanide, which is silvery-white solid metal in nature. The metals are opaque to visible lights.
Hence, erbium is opaque.
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<u>2.37</u> is the pH of 0.075 M HZ.
<h3>What is pH?</h3>The term pH, which originally stood for "potential of hydrogen" (or "power of hydrogen"), is used in chemistry to describe how acidic or basic an aqueous solution is. Lower pH values are summarized for acidic solutions (solutions with higher H+ ion concentrations) than for basic or alkaline solutions.
The pH scale is inversely indicates to the concentration of hydrogen ions in the solution and is logarithmic.
⇒pH = -log()
Acidic solutions are those with a pH below 7, and basic solutions are those with a pH above 7, at a temperature of 25 °C (77 °F). At this temperature, solutions with a pH of 7 are neutral (e.g. pure water). The pH neutrality relies on temperature, falling below 7 if the temperature rises above 25 °C.
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