Answer:
Na2S
Explanation:
Na2S: Na (always +1). S (-2) in this formula
CaSO4: Ca (always +2). O (-2). => S (+6) in CaSO4
S (0)
SO2: O(-2) => S (+4)
Hope this answer will help you! Have a nice day!
Answer:
The energy absorbed in the first move is greater than the energy released in the second move.
Explanation:
The greater the level number the greater the energy.
A movement up a level requires energy so energy id absorbed.
Dropping down a level releases energy.
Explanation:
When an atom gains or lose electrons then the atom tends to attain a negative or positive charge. Thus, the ions become charged.
Whereas when an atom is neutral then the number of electrons equals the number of protons. But when an atom becomes charged then the ions have unequal number of protons and electrons.
For example, atomic number of sodium is 11 and when it loses one electron then it attains a positive charge. The equation is as follows.
Thus, we can conclude that ions must always have an unequal number of protons and electrons.
If black balls are carbon atoms and white balls are hydrogen atoms then the given structure is of PROPANE
(Make sure to mention what exactly balls are?)
Its a covalent bond formed by Potassium and Chlorine.
The product obtained is POTASSIUM CHLORIDE.
Hope this HELPS !!!