Answer:
B
Explanation: a chemical reaction is only the rearrangement of electrons where a nuclear reaction actually changes the elements and thus the nuclei
The liquid state into a gaseous state
Answer:
Number of protons = 
Number of electrons = 
Charge on these electrons = -
Explanation:
1 atom of lead contains 82 protons and 82 electrons
1 mole =
atoms
Thus,
1 mole of lead contains
protons
Also, 1 mole of lead weighs 207.2 g
So,
207.2 g of lead contains
protons
1 kg = 1000 g
So,
1000 g or 1 kg of lead contains
protons
<u>Number of protons =
</u>
Also, for neutral atom, number of protons = number of electrons.
Thus,
<u>Number of electrons =
</u>
Also,
Charge of 1 electron = - 
Charge on these electrons = -
<u>Charge on these electrons = -
</u>
Answer:The bulb did not glow as the switch is not turned on which obstructs electric current to flow through it. Also, the battery in the figure has both terminals as positive. It should be one negative terminal and one positive terminal.Redrawn diagram is also given
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