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Electrical Engineering · Q3

Voltage, Current And Resistance

Engineering and GATE · Electrical Engineering · question 3

Q3

A neutral atom with an atomic number of five has how many electrons?

A.
1
B.
5
Answer
C.
None
D.
Depends on the type of atom

Answer: Option B

Solution

Answer: Option B
Solution:
Atomic Number: The atomic number of an element tells you how many protons are in the nucleus of an atom of that element.
Neutral Atom: A neutral atom means the atom has no overall electrical charge.
Protons and Electrons: Protons have a positive charge (+), and electrons have a negative charge (-).
Balancing the Charges: For an atom to be neutral, the number of positive charges (protons) must equal the number of negative charges (electrons).
Therefore: If an atom has an atomic number of five, it has five protons. To be neutral, it must also have five electrons to balance out the positive charge of the protons.