Number of protons, neutrons and electrons in the element 239 Y is

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Number of protons, neutrons and electrons in the element ${ }^{239} Y$ is

ChemistryStructure of AtomJEE Main

Options:

A $89,231,89$
B $89,89,242$
C $89,142,89$
D $89,71,89$

Solution:

1239 Upvotes Verified Answer

The correct answer is: $89,142,89$

In number of protons and electrons is 89 and No. of neutrons $=A-Z=$ $231-89=142$

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