Question

the atomic no.of three lanthanide elements x,y,z are 65,68,70respectively .the basic character of their hydroxides will decrease as.​

Answer 1

Answer:

In a period basic nature decreases and acidic nature of oxides increases along a period. Hence, 'Z' is the element with the least atomic number, 'Y' is the next one and 'X' is the element with the highest atomic number.