A: ⁹³₂₃⁷Np
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Proton number is another name for atomic number. Nucleon number is another name for mass number. What are isotopes?
The centre of the Sun produces large amounts of energy. What is the source of this energy?
Tritium is a radioactive isotope of hydrogen with a half-life of 12 years. If a sample starts with 40 million atoms o…
A hot liquid is allowed to cool. The graph shows the cooling curve. In which part of the curve is latent heat released?
For the same temperature rise and the same original volume, which of the three states of matter expands the most and …
The speed of radio waves is c. A radio station transmits waves with a wavelength λ. What is the frequency of the tran…