An element has atomic number 10 and an atomic mass of 20. how many neutrons are in the atom of this element?

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

In saturated organic compounds, all the bonds between carbon atoms are called?

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.