On the basis of electronic configuration of ,9X5, the group suber andperiod of the element X' is:(a) Group 15 period 2(b) Group 18 period 2(c) Group 9 period 5(d) Group 13 period 5ORAn element 'X' with atomic number 11 forms a compound with element Twith atomic number 8. The formula of the compound formed is(a) XY(b) X Y(c) XY,(d) X Y11h11

On the basis of electronic configuration of ,9X5, the group suber andp

1.	On the basis of electronic configuration of ,9X5, the group suber andperiod of the element X' is:(a) Group 15 period 2(b) Group 18 period 2(c) Group 9 period 5(d) Group 13 period 5ORAn element 'X' with atomic number 11 forms a compound with element Twith atomic number 8. The formula of the compound formed is(a) XY(b) X Y(c) XY,(d) X Y11h11
Answer» ⁹X₅ is BORON ATOMIC no. and belongs to group 13 period 2X has atomic no. 11 [Na] valency=1Y has atomic no. 8 [O] valency=2compound formed by X and Y is X₂Y