Respuesta :
As given
Substance M is a blue, brittle solid: It means it is a solid. However we cannot predict the nature of the element. It can be non metal or metal. So it can be highly electropositive or electronegative. It can lose or gain electron or it may share electrons to form covalent bonds
Similarly
Substance N is a colorless, flammable gas: it must be non metal. But we cannot predict the exact composition or nature of the gas.
Flammable colourless means it can be hydrogen.
So we can say that we cannot comment on the nature of the compound formed by combination of M and N.
The compound created when M and N form a covalent bond cannot be predicted based on the information given.
It should be noted that since substance M is a blue, brittle solid, it implies that's it's a solid, however, the nature of the compound cannot be predicted.
Based on the information given, a covalent bond is formed which means that there is a sharing of electrons between M and N. Despite that, the compound formed is not known as it can be a non-metal, metal, colorless, flammable, etc.
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