The 4s subshell has more energy than 3p subshell.
State Aufbau principle.

The 4s subshell has more energy than 3p subshell. Is it true ? Justify your answer.

A student argued that the 3d orbitals will be filled only after the 4s orbital is completely filled in accordance with aufbau principle. Then another student opposed by saying that it is not true for certain elements like Cr and Cu. Whose argument is correct?

A student argued that the 3d orbitals will be filled only after the 4s orbital is completely filled in accordance with aufbau principle. Then another student opposed by saying that it is not true for certain elements like Cr and Cu. Write electronic configuration of underset(24)(Cr) and underset(29)(Cu) . Justify your answer.

There are 4 shells in the element X. The 3d subshell of X contains 6 electrons. (symbol is not real) a. Write down the complete subshell electronic configuration of X. b. Identify the Group and block. c. Write two characteristics of the elements in which X is included? d From which subshell does this element loses its electrons to show +2 oxidation state?

Which of the following statements in relation to the hydrogen atom is correct? 3s orbital is lower in energy than 3p orbital, 3p orbital is lower in energy than 3d orbital, 3s and 3p orbitals are lower in energy than 3d orbital, 3s and 3p orbital all have the same energy

Among the 3s & 3p subshells which has higher energy?

The last subshell of an element is 3p and there are 3 electrons in it. Write the complete electronic configuration of the element.

The last subshell of an element is 3p and there are 3 electrons in it. Identify its period and group.

Assertion: The ionization of s-electrons requires more energy than that for the ionization of p-electrons in the same shell. Reason: s-electrons are closer to the nucleus than p-electrons and hence are more strongly attracted by nucleus.

The last electron of an element is filled in the 3d^2 subshell. Then find the following. a) Atomic number b) Group, period Block