Three elements X, Y and Z are in the 3rd period of the periodic table. The oxides of X, Y and Z, res — JEE Mains Chemistry Past Papers Chemistry Question
Question
Three elements X, Y and Z are in the 3rd period of the periodic table. The oxides of X, Y and Z, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of X, Y and Z is: (A) X < Y < Z (B) Z < Y < X (C) X < Z < Y (D) Y < X < Z
💡 Solution & Explanation
On moving left to right in a period. Acidic character of oxides is increase. 3rd period element oxides. Basic MgO O Na Amphoteric 2O Al Acidic 2 2 O Cl O P SiO (i) Acidic character (i) Atomic No So X have minimum Atomic No & Z have maxima Atomic No So correct order is X < Y < Z SECTION – 2 : (Maximum Marks : 20) This section contains FIVE (05) questions. The answer to each question is NUMERICAL VALUE with two digit integer and decimal upto one digit. If the numerical value has more than two decimal places truncate/round-off the value upto TWO decimal places. Full Marks : +4 If ONLY the correct option is chosen. Zero Marks : 0 In all other cases [kaM 2 ¼vf/kdre vad% 20) bl [kaM esa ik¡p (05) iz'u gSA izR;sd iz'u dk mÙkj la[;kRed eku (NUMER