Using noble gas notation, depict reasonable electron configurations for the following element: The actinide uranium, U, is a radioactive element that has found use as the fissile explosive material to produce nuclear weapons. (Express your answer using the noble gas notation. For example, the electron configuration of Li would be entered as [He]2s¹.)

Give the number of s, p, d, and f electrons in each of the following atoms. (Please remember that Cu and Cr have irregular electron configurations. Also, the total number of electrons should add up to the atomic number of the neutral atom.) d atom Cd (Z=48) Fr (Z=87) Cu (Z=29) Р

An experiment was conducted to determine IE1 for magnesium. In this experiment it was determined that 1.193 x 10-18 J was needed to remove the first electron from an atom of magnesium in the gas phase.  According to these experimental results, what is the first ionization energy of magnesium?

2) The ground-state valence-shell configuration of a particular atom is 4s23d104p5. Theelement to which this atom belongs is a? noble gas. Halogen alkali metal transition metal metalloidchalcogen alkaline earth metal actinide lanthanide

This energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI prefix 'zepto' means 10-21. You can find the meaning of any SI prefix in the ALEKS Data tab.) energy (zJ) 1400 1200 1000 800 600 400 200 0 I B -A Use this diagram to complete the table below. What is the energy of the electron in the ground state? What is the energy of the electron in the first excited state? If the electron makes the transition shown by the red arrow, from A to C, will a photon be absorbed or emitted? Calculate the wavelength of the photon that would be absorbed or emitted. Round your answer to 3 significant digits. 250 ZJ 400 ZJ absorbed emitted nm x10 X S

An atom with the element symbol X has 62 protons in its nucleus. For the 62nd electron, determine the ionization energy of the electron

Predict the electron configuration for the Sb atom:     Predict the electron configuration for the Sm atom:   Predict the electron configurations of N3–