Atomic Theory

Which of the following is an element

This man set science back 1200 years by rejecting the idea of the atom.

This is known as the z and it is the same as the number of protons.

What element is represented by the letter Sn?

What element has an atomic number of 47?

This scientist discovered the nucleus of an atom.

This subatomic particle is in the nucleus and has a positive charge.

This particle is in the cloud and has a negative charge.

What element is the symbol Ha?

Which parts of John Dalton's theory were incorrect?

This is an example of?

This is the sum of protons and neutrons.

This scientist came up with the original idea of the atom.

What element has 8 neutrons?

What element has a ²³⁵_{92  isotope symbol?}

Which has the most protons?

Which has more electrons?

Which is heavier?

This scientist discovered the electron.

What element is represented by the symbol W?