The electronic configuration of three elementsX, Y and Z are as follows:
X = 2, 4, Y = 2, 7, Z = 2,1
Which two elements will combine to form an ionic compound and write the correct formula.
| (a) X2Y | (b) YZ |
| (c) XZ3 | (d) Y2Z |
"
Correct Answer: (b) YZ
Explanation: The electronic configuration of Y = 2, 7 and Z = 2,1. Z will donate its one electron to Y to complete its octet by forming ionic bonds.
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