Answer : Thecorrect option is, They have different charges and same masses.
Explanation :
As we know that an atom is the smallest unit of a matter that consist of three subatomic particles which are electrons, protons and neutrons.
The protons and the neutrons are located inside the nucleus or center of the nucleus where the mass of the an atom is concentrated and the electrons are located around the nucleus.
The protons are positively charged, the electrons are negatively charged and the neutrons are neutral that means it has no charge.
Atomic number : It is defined as the number of protons or number of electrons.
Atomic number = number of protons = number of electrons
Mass number : It is defined as the sum of number of protons and number of neutrons.
Number of neutrons = Mass number - Number of protons
From the given data we conclude that:
Atom Q has 11 number of protons, electrons and 12 number of neutrons.
Atom R has 11 number of protons, 10 number of electrons and 12 number of neutrons.
Atom Q has no charge but Atom R has (+1) charge due to loss of 1 electron. That means, they have different charges.
Mass of Atom Q = Number of neutrons + Number of protons = 11 + 12 = 23
Mass of Atom R = Number of neutrons + Number of protons = 11 + 12 = 23
Thus, the correct option is, They have different charges and same masses.
