What is KUFCA? in science?

What is the formula that this ionic compounds could form sr2+p3-o2-

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

Word equation for k(s) +h2o(l) yield koh (aq) + h2