Which statement is true about two isotopes of the same element?

they have the same mass number.
they have different numbers of protons.
they have different locations on the periodic table.
they have different numbers of neutrons.

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hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.