Solution:
X will form X2- as its atomic number is 8 (2,6). It needs 2 more electrons to fulfil its octet rule.
Y will form Y2+ as its atomic number is 12 (2,6,2). It needs to remove 2 electrons to fulfil its octet rule.
The atomic number of an element X is 8 and that of element Y is 12. Write down the symbols of the ions you would expect to be formed from their atoms.
The atomic number of an element X is 8 and that of element Y is 12. Write down the symbols of the ions you would expect to be formed from their atoms.