Atomic Study Guide - H Chemistry
Ch 4-7 (Glencoe)
- Complete the following table:
Element / Symbol / Atomic # / Mass # / # of protons / # of electrons / # of neutrons
45 / 58
mercury / 201
17 / 18
- Complete the following table:
Isotope / Symbol / Atomic # / Mass # / # of protons / # of electrons / # of neutrons
selenium-79 / 79Se
37 / 48
107Pd
- Complete the following table:
element name / symbol & charge of ion formed / ion name / Cation (+) or anion (-)? / Metal or nonmetal?
potassium / potassium ion
sulfur / sulfide ion
Br- / bromide ion
Fe3+ / iron ion
4. True/False: Write the letter T or F in the space provided by each statement.
______Atoms of the same element have the same number of neutrons in the nucleus.
______The mass of a proton is approximately equal to the mass of a neutron.
______Atoms of the same element have the same number of protons in the nucleus.
______Atoms of elements are electrically neutral.
______The mass of an electron is approximately equal to the mass of a neutron.
______When an electron is excited it travels to a higher energy level. When it falls back down it releases a proton.
5. State the group number(s) and one fact about each of the following families of elements:
a.) alkali metals
b.) alkaline earth metals
c.) transition metals
d.) halogens
e.) noble gases
6. Explain the contribution to the scientific community made by each individual listed below:
a.)Democritus
b.)Thompson and Millikan
c.)Rutherford
d.)Bohr
e.)Mendeleev
f.)Moseley
7. Evaluate each part of Dalton’s Atomic Theory listed below. State which points are still completely supported by the scientific community today, and explain why some of the points were disproved or clarified.
a.)All elements are made of tiny atoms.
b.)Atoms cannot be subdivided.
c.)Atoms of the same element are exactly alike.
d.)Atoms of different elements can join to form molecules.
8. Calculate the wavelength of the radiowaves sent out by 102.7 FM (frequency = 102.7 MHz).
9. Calculate the energy of one photon of light with a wavelength equal to 459 nm.
10. Write the complete and abbreviated electron configurations for the following atoms and ions:
a.)Mg
b.)Mg2+
c.)Mn
d.)
11. Draw the orbital diagram and the Lewis dot diagram for the following elements:
a)He
b)Si
c)Ti