the symbol for a radioactive nuclide is $_{90}^{234}th$. which statement is correct?\no the atomic number of…

the symbol for a radioactive nuclide is $_{90}^{234}th$. which statement is correct?\no the atomic number of the radioactive nuclide is 90.\no the mass number of the radioactive nuclide is 144.\no the number of neutrons that are present in the nucleus of each atom is 324.\no the number of protons that are present in the nucleus of each atom is 234.

the symbol for a radioactive nuclide is $_{90}^{234}th$. which statement is correct?\no the atomic number of the radioactive nuclide is 90.\no the mass number of the radioactive nuclide is 144.\no the number of neutrons that are present in the nucleus of each atom is 324.\no the number of protons that are present in the nucleus of each atom is 234.

Answer

Answer:

The atomic number of the radioactive nuclide is 90.

Explanation:

Step1: Recall nuclide notation

In the notation $_{90}^{234}\text{Th}$, the sub - script represents the atomic number and the super - script represents the mass number.

Step2: Identify atomic number

The sub - script is 90, so the atomic number of the radioactive nuclide is 90.

Step3: Identify mass number

The mass number (super - script) is 234, not 144 or 324.

Step4: Calculate number of neutrons

Number of neutrons = Mass number - Atomic number = 234 - 90=144, not 324.

Step5: Identify number of protons

The number of protons is equal to the atomic number, which is 90, not 234.