Magnesium dichloride or Magnesium chloride
Isotones are nuclides that have the same neutron number but a different proton number. Therefore the answer is C. boron and carbon.
Metal have some properties like lustrous (shiny), good conductors of electricity and heat,etc. Metals have another property by which metal can be drawn into a wire by hammering on it .This property is called as 'ductility'.
hope this helps, please mark brainliest. :)
