In the sentence "what kind of element?" like what does it mean? should I answer it's -"metal" or "non-metal" -or like "Halogen metal" and "Alkali Metals" -or an element like "hydrogen" and "helium".
Like for example:
What kind of metal has less than 4 valence electrons?
If the question says "what element", then your answer will be a specific name of an element, like iron, carbon, hydrogen.
but if the question says "what kind of element " then your answer will be name of a group of element like halogens, noble gases, alkali metals and others.
