Assume that orbitals fill strictly by the $(n + l)$ rule, with the lower $n$ filling first when $(n + l)$ is equal, and ignore relativistic effects. Element 130 would then be placed in

Ag-block, period 8
Bf-block, period 8
Cd-block, period 8
Dp-block, period 8

Answer: A

The order after 7p is 8s (Z = 119-120), then 5g (Z = 121-138). Z = 130 lies in the 5g range, so the last electron enters a 5g orbital. The element is a g-block element of period 8.

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Assume that orbitals fill strictly by the (n+l) rule, with the lower n filling first when (n+l) is equal, and ignore relativistic effects. Element 130 would then be placed in

Answer: A

More questions on Modern periodic table and classification of elements

Assume that orbitals fill strictly by the $(n + l)$ rule, with the lower $n$ filling first when $(n + l)$ is equal, and ignore relativistic effects. Element 130 would then be placed in