Atomic structure Questions

Physical Chemistry

Atomic structure Solutions

The wavelength of one line in the emission spectrum of C is 458 nm. What is the energy of one photon with this wavelength? (Hint: h=6.626 x 10^-34 J s)

Physical Chemistry

Atomic structure Solutions

Matter has mass and takes up space. Atoms are basic building blocks of matter, and cannot be chemically subdivided by ordinary means. What's an atom made of? Even though an atom is really small, it is made of even smaller particles. It's basically made of 3 tiny subatomic particles: _______________ ________________ ________________ Parts of an Atom ____(a)_________: in the nucleus (positive) charge 1 amu _____(b)________: in the nucleus o (no) charge 1 amu ______(c)_______: in the electron cloud - (negative) charge o amu The center of an atom is called the_______(d)______ The nucleus contains 2 types of particles: ______(e)_______= positive (+) charge______(f)_______= no charge, neutral This means the nucleus is always positive. The Outside of the Atom: Surrounding the nucleus is a cloud of electrons. ______(g)_______spin quickly. Are negatively (-) charged are very small. Have a mass of O AMU.

Physical Chemistry

Atomic structure Solutions

A bright violet line occurs at 435.8 nm in the emission spectrum of mercury vapor. What amount of energy, in joules, must be released by an electron in a mercury atom to produce a photon of this light?

Physical Chemistry

Atomic structure Solutions

How are the Bohr model and the quantum mechanical model of the hydrogen atom similar? How are they different?

Physical Chemistry

Atomic structure Solutions

The atomic radii in picometers of F, Br, and I are shown in the table below. 9 F 64 pm 17 CI ? pm 35 Br 114 pm 53 I 138 pm Using this information, predict which of the following best represents the most reasonable atomic radius of Cl.

Physical Chemistry

Atomic structure Solutions

What is Heisenberg's uncertainty principle? O Electrons travel in discrete orbitals around the nucleus. O It is impossible to know the exact position and speed of an electron at a given time. O It is impossible to predict the spin of a moving electron. O Electrons are negatively charged and nuclei are positively charged.

Physical Chemistry

Atomic structure Solutions

Select the examples in which the electron configurations correctly match the given atoms in their ground states. (select all that apply, wrong choices will be penalized) (A) Ar = 1s²2p⁶3d¹⁰ (B) S = [Ne] 3s²3p⁴ (C) Cr = [Ar] 4s¹3d⁵ (D) Cu = 1s²2s²2p⁶3s²3p⁶4s²3d⁹ (E) Cu = 1s²2s²2p⁶3s²3p⁶4s¹3d¹⁰

Physical Chemistry

Atomic structure Solutions

Based on formulas alone, which is the stronger acid? 1. HCI 2. HF Based on formulas alone, which is the stronger acid? 1. H₂O 2. H₂S

Physical Chemistry

Atomic structure Solutions

Which trends appear as the elements in Period 3 are considered from left to right? 1. Metallic character decreases, and electro- negativity decreases. 2. Metallic character decreases, and electro- negativity increases. 3. Metallic character increases, and electro-negativity decreases. 4. Metallic character increases, and electro-negativity increases.

Physical Chemistry

Atomic structure Solutions

As the atoms in Period 4 of the Periodic Table are considered from left to right, the atoms generally show 1. an increase in radius and an increase in ionization energy 2. an increase in radius and a decrease in ionization energy 3. a decrease in radius and an increase in ionization energy 4. a decrease in radius and a decrease in ionization energy

Physical Chemistry

Atomic structure Solutions

12. a. Write out the full electron configuration for Scandium (Sc) b. Would the second ionization energy for Sc be high or low? Explain c. Would the fourth ionization energy for Sc be high or low? Explain

Physical Chemistry

Atomic structure Solutions

Which set of quantum numbers is correct and consistent with n = 4? A) l = 3 ml = -3 ms = +½ B) l = 4 ml = +2 ms=-½ C) l = 2 ml = +3 ms =+½ D) l = 3 ml = -3 ms = +1