Please try to give me ur best answer..if ur not sure tell me
1.which element is least likely to react with other elements??
Argon (Ar)
Sodium(NA)
Aluminum (Al)
Chlorine(Cl)
2.Many forces act on the particles in the nucleus of a atom.Which of theses forces is the strongest in a small atom?
electric force
gravitational force
weak nuclear force
strong nuclear force
3.thcomposition of the atmosphere has changed throughout the Earths history.Which substance, not originally found in earth's atmosphere, allowed the evolution of multicellular animal around 600 million years ago..??
nitrogen
free oxygen
water vapor
carbon dioxide
TY...and ur sure about all right?
1.which element is least likely to react with other elements??
Argon (Ar)
Sodium(NA)
Aluminum (Al)
Chlorine(Cl)
2.Many forces act on the particles in the nucleus of a atom.Which of theses forces is the strongest in a small atom?
electric force
gravitational force
weak nuclear force
strong nuclear force
3.thcomposition of the atmosphere has changed throughout the Earths history.Which substance, not originally found in earth's atmosphere, allowed the evolution of multicellular animal around 600 million years ago..??
nitrogen
free oxygen
water vapor
carbon dioxide
TY...and ur sure about all right?