An element 'X' (Z=12) combines with element 'Y' (Z=17) to form an electrovalently bonded compound. Which of the following is FALSE for the formed compound?

Which of the following elements can not form compounds?

Which of the following element form interstitial compounds?

Transition elements form binary compounds with halogens. Which of the following elements will form MF_(3) type compounds?

Transition elements form binary compounds with halogens. Which of the following elements will form MF_(3) type compounds?

An element X burns in oxygen to form an electrovalent compound XO. What is the formula of compounds formed if this element is allowed to combine with chlorine