Answer:
Neutrons play no role in the net charge of an atom, so you can ignore them here.
Proton = 7
Electron = 10
Net Charge = 7 - 10
= -3
Again,
Proton = 3
Electron = 2
Net Charge = 3 - 2
= 1
-83.15
Explanation:
190K − 273.15 = -83.15°C
1.Most metal oxides are insoluble in water but some of these (e.g. Na2O.
2.: (i) A hissing sound is observed.
1.ii) The mixture starts boiling and lime water is obtained.
J.J. Thomson
