Due to the Octet Rule ...
Elements on the right side of the Periodic Table gain electrons in order to get the 8 valence electrons and form negative ions.
And elements on the left side of the Periodic Table lose electrons in order and form positive ions.
5g NaOH x 1 mol NaOH/ 39.99g NaOH = 0.125 mol NaOH
Calcium carbonate is CaCO3.
So there is calcium, symbol is Ca and an atomic number of 20.
Carbon: symbol is C and an atomic number of 6.
Oxygen: symbol is O and an atomic number of 8.
In one molecule of CaCO3, there is one atom of Ca, one atom of C, and three atoms of O as shown by the subscript next to O in the formula. There are no other subscripts to indicate more than one atom of the other elements, so there is only one atom of the other two elements
Answer:
The answer is option C.
Explanation:
A covalent bonded molecule when not dissolved in an aqueous solution does not contain any ions hence does not conduct electricity making it an insulator.
Hope this helps you.
Blue to red is acidic, red to blue is basic and no change is neutral.
