1: In a Uranium atom, which is the heaviest element naturally occurring on earth, how many atomic electrons are there? Write down the complete electron configuration of the ground state of Uranium.
1: In a Uranium atom, which is the heaviest element naturally occurring on earth, how many...
Which element has the ground-state electron configuration [Xe]6s25d14f7? Eu Tb Pt Gd How many valence electrons does a neutral polonium atom have? 4 6 2 84 Of the following, which atom has the largest atomic radius? Cr Sc Co Br Of the following, which atom has the smallest atomic radius? Po Ba Te Sr Of the following, which atom has the smallest atomic radius? Br K Co Ni
2. An element has 2 naturally occurring isotopes with the following masses and abundances A. Calculate the atomic weight of the element. (20 pts) Isotope mass Percentage 34.97 amu 75.78% 36.97 amu 24.22% B. What is the element? C. How many neutrons does the heavier isotope have? (Round to whole number) D. How many electrons does the element have? E. What type(metal/nonmetal) of element is it? F. If the element above gains 1 electron what neutral element has the some...
Uranium has 3 naturally occurring isotopes; 238U, 235U, and 234U. Roughly 99.2745% of uranium is U-238 and 0.7200% is U-235. What is the average mass of an U atom? You may assume that the mass of each isotope is equal to its mass number. Report your answer to 6 sig figs. How many protons, neutrons, and electrons does 235U have?
Write the electron configuration for Astatine (At), element 85 in its ground state. Indicate the number of valence and core electrons in this element How many unpaired electrons does ground state At possess? Which set of quantum numbers correctly describes an electron in the outermost orbital of a astatine atom? At Electron Configuration: Valence Electrons: Core Electrons: Quantum Numbers: n = 1 = m1 = m2 = Unpaired Electrons:
Most naturally occurring Gallium is Gallium-69. How many protons, neutrons and electrons does an atom of Gallium-69 have? What is the isotope notation for Gallium-69? 10
3. mer How many electrons in an atom can have each of the following quantum designations! 2 fourth period and forbital C. -41-3m--12 d. 3p 4. (pt) Why does the size of atoms increase going down a group on the periodic table? 5. (pt) What is a quanta of energy? 6. (pt) How does an atom generate atomic emission spectra? 7. (pt) Rank the following in order of increasing first ionization energies Ge, K. C S and Si X (pt...
An atom has 38 protons and 48 neutrons. 16. How many electrons does it have? 17. Give the complete electron configuration for this element. 18. How many valence electrons does it have? 19. In which period of the periodic table is it found? 20. What is the charge on the ion it forms? 21. This ion will now have the same electron configuration as what neutral atom?
An unknown element (Element X) has three naturally occurring isotopes. Complete the table by filling in the missing percent abundance (2 decimal places). Then calculate the atomic mass of element X (1 decimal place) and determine its identity by filling in its atomic symbol (case sensitive). Isotope Abundance (%) Atomic Mass (amu) 23.985042 1 78.99 2 24.985837 10.00 3 25.982593 amu Atomic mass of element X (1 decimal place): Atomic symbol of element X:
How does the DeBroglie wavelength of the electron in the ground state of a hydrogen atom compare to the DeBroglie wavelength of the electron when it's in a 2p state? The DeBroglie wavelengths of the two electrons are equal. The DeBroglie wavelength of the electron in the ground state is greater than that of the electron in a 2p state. The DeBroglie wavelength of the electron in the ground state is less than that of the electron in a 2p...
Write the condensed electron configuration of titanium. List the amount of unpaired electrons of atom of titanium. List the amount of valence electrons of atom of titanium. 13. (a) Write the condensed electron configuration for a ground state atom of titanium. (b) How many unpaired electrons does an atom of titanium possess? (c) How many valence electrons does an atom of titanium possess?