A. Smell (Oder) B. Color and D I’m pretty sure because the common properties are Color, Oder, Melting point, and boiling point
Use avogadro's number---> 6.02 x 10^23 atoms= 1 mol
7.81 x 10^21 (1 mole/ 6.02 x 10^23)= 0.0130 moles of Cu
<span>Igneous
rocks are those rocks that were formed through cooling and solidifying the
molten materials. The best example for igneous rock is solid volcanic java.
Lava are liquid that comes from a volcano, but once it is dried and solidify,
it becomes a rock and called igneous rock.
Another example is the granite and basalt. And according to research igneous
rock comes from the latin word ignis which means fire. Thus this says it all.
From a liquid becomes a rock.
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Answer:
selenium, fluorine and neon
Explanation:
the less valence electrons an element has, the more reactive.
selenium has 6 valence electrons
fluorine has 7 valence electrons
neon has 8 valence electrons
So, it is ordered from the least number of valence electrons to the most
