Determine the missing species:
a) 41ca+ ? → 41k
b) 15o → 15n+ ?
1. 0
−1
e and 1
0h
+
2. 0
+1e and 1
0h
+
3. 1
0h
+ and 0
+1e
4. 0
−1
e and 0
+1e
5. 1
0h
+ and 0
−1
e
6. 0
+1e and 0
−1
e
7. none of these

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants