consider the following elements:Ne, S,Cl, O,Cu, Mg, C, He, F,Ca, Sc. which of them exhibit allotropy, is malleable, have stable electronic configuration, ionize by gaining one electron, belong to the alkaline Earth metal, for colour ion, ionize to give am incomplete d-orbital.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the right answer is c i just did the question.