Determine, using the table of D.I. Mendeleev, the number of protons and the number of neutrons in the nuclei of atoms

Determine, using the table of D.I. Mendeleev, the number of protons and the number of neutrons in the nuclei of atoms: lithium, argon, silver and cesium. The nucleus of which chemical element has 10 protons and 10 neutrons?

Lithium: protons 3, neutrons 4
Argon: protons 18, neutrons 22
Silver: protons 47, neutrons 61
Cesium: protons 55, neutrons 78
The nona nucleus has 10 protons and 10 neutrons

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