Answer: An element os made up of one kind of atom.
Explanation: Dalton's concept states that all atoms of an element is identical.
Answer:
has a highly ordered microscopic structure
Answer:
Fluorine
Explanation:
These particles stick in the atoms and make them radioactive.
atomic mass of magnesium = 24.305
atomic mass of chlorine = 35.453
molecular mass of MgCl2 = 24.305+2*35.453 = 95.211
Number of moles in 338 g of pure MgCl2
= 338/95.211 = 3.55001 moles
Ans. there are 3.55 moles of MgCl2 in 338 g of the substance.
