Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Chemistry General Principles And Process of Isolation of Elements
The electronic configuration of 3 elements X, Y and Z are:
X = 2, 4
Y = 2, 7
Z = 2, 1
Which of the following compounds can be formed?
1
X2Y
2
XZ3
3
Y2Z
4
YZ