Answer:
The answer to the question is
<h2>
A. Air, Soil, Sand, Water</h2>
Explanation:
<h3>
Answer:</h3>
s-sub-level and p-sub-level
<h3>
Explanation:</h3>
- Group 18 elements in the periodic table are known as noble gases.
- They have an octet configuration with their outermost s and p-sub-levels full, which makes them inert or nonreactive.
- The s-sub-level takes up a maximum of 2 electrons while the p-sub-level holds a maximum of 6 electrons.
- They include, argon, neon, xenon, krypton, etc.
- Their electron configuration shows full outermost s and p-sub-levels.
- For example; the electron configuration of Ne is 1s²2s²2p⁶, with full s and p sub-levels.
Answer is: a. harder.
Friedrich Mohs devised a scale that tested mineral hardness, which means the resistance of a mineral to being scratched. This scale (from 1 to 10) is known as the Mohs Hardness Test.
For examples:
fingernail (hardness = 2.5).
copper penny (hardness = 3)
glass plate or steel knife (hardness = 5.5)
steel file (hardness = 6.5).
According to this scale hardness of the mineral is between 5.5 and 6.5.
Please retake the picture and comment me when you ask the question again. it is blurry.
Answer:
The process or result of oxidizing or being oxidized.(Rust)
Explanation:
Pluto