Which of the following statements are true fo | vedclass

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(B) For a neutral atom,the atomic number is defined as the number of protons present in the nucleus,which is also equal to the number of electrons orb

Vedclass · Accepted Answer

$(ii)$ and $(iv)$

Vedclass · Answer

(B) For a neutral atom,the atomic number is defined as the number of protons present in the nucleus,which is also equal to the number of electrons orbiting the nucleus. Thus,statement $(iv)$ is correct.The mass number of an element is defined as the sum of the number of protons and the number of neutrons present in the nucleus of an atom. Thus,statement $(ii)$ is correct.Statement $(i)$ is incorrect because the atomic number is not the sum of protons and electrons.Statement $(iii)$ is incorrect because atomic mass is not equal to the number of protons or neutrons.Therefore,statements $(ii)$ and $(iv)$ are true.

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