Which type of radius is formed by metalloid (a). Covalent radius (b).ionic radius (c).vander waal radius (d). Metallic radius?

see lets solve it in a reverse order :-

(d) metallic radius is only in case of metals, not in any other. so it is not the answer.

(c) Vander waals radius is only in case of noble gases. so this also not the answer.

(b) For ionic radius there should be the electronegativity difference of at least 2. This is also not possible in case of a metalloid.

(a) the last option is the COVALENT BOND. This is the type of bonding which leads to the formation of COVALENT RADIUS.

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I am M.Sc (chemistry ) from punjabi university. I am a science teacher with expertise in chemistry, with 8 years of experiance in teaching. i am getting a handsome salary , now i wish to help out the people who need me UNCONDITIONALLY. and I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge.

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