Write the electron configuration for a neutral atom of beryllium. 0 X Ś

cmillan Learm Write the full electron configuration for P³-. full electron configuration: 1s22s22p63s23p6 What is the atomic symbol for the noble gas that also has this electron configuration? atomic symbol:

Give the electron configurations for the following atoms. Do not use the noble gas notation. Write out the complete electron configuration. Example: Mg 1s2s²2p°3s² Element Electron configuration N Sc Li Cu

In general, the ionization energy increases as you move from left to right in the periodic table, as can be seen in the figure below. 2500 He Noble gases Ne 2000 Ar * 1500 Kr Period 4 transition elements Period 5 Хе transition elements 1000 500 Li Na K Rb Alkali metals 0+ 10 20 30 40 50 Atomic number However, the ionization energy of boron lower than that of beryllium, and the ionization energy of aluminum is lower than that f magnesium.

Photoelectron spectroscopy applies the principle of the photoelectric effect to study orbital energies of atoms and molecules. High-energy radiation (usually UV or X-ray) is absorbed by a sample and an electron is ejected. The orbital energy can be calculated from the known energy of the radiation and the measured energy of the electron lost. The following energy differences were determined for several electron transitions: ΔE2 →1 = 4.098 ×10−17 J ΔE3 →1 = 4.854 × 10−17 JΔE5 → 1 = 5.242 ×10−17 J  ΔE4 → 2 = 1.024 ×10−17 J Calculate the energy change and the wavelength of a photon emitted in the following transitions. Enter your answers in scientific notation. Use 6.626 ×10−34 J·s for Planck's constant. (a) Level 3 to 2: ______J ______m (b) Level 4 to 1: _____J_____ m (c) Level 5 to 4: _____J _____m

Write down the orbital diagram for an ion that contains 19 protons and 18 electrons.

Reorder the list in the table, if necessary, so that the atoms and ions in it are list in order of decreasing size.

An atom has the following electron configuration. How many valence electrons does the atom have? 1s²22s22p63s23p3

Which elements have only one electron shell? carbon hydrogen helium

(a) Identify the number of electrons in the ground-state outer shell of atomic oxygen (atomic number 8).(b) How many electrons are in the ground-state outer shell of fluorine?