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Chapter 4: Q. 4.95 (page 132)
Complete the following statement:
a. The atomic number gives the number of _______ in the nucleus.
b. In an atom, the number of electrons is equal to the number of _______.
c. Sodium and potassium are examples of elements called________.
a. Protons.
b. Protons.
c. Alkali metals.
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Strontium has four naturally occurring isotopes, with mass numbers and
a. Write the atomic symbol for each of these atoms.
b. How are these isotopes alike?
c. How are they different?
d. Why is the atomic mass of strontium listed on the periodic table not a whole number
e. Which isotope is the most abundant in a sample of strontium
Identify each of the following elements as a metal, a nonmetal, or a metalloid:
a. Located in Group
b. A good conductor of electricity
c. Chlorine
d. Arsenic
e. An element that is not shiny
f. Oxygen
g. Nitrogen
h. Tin
There are four naturally occurring isotopes of Iron:
a. How many protons, neutrons, and electrons are in ?
b. What is the most abundant isotope in an Iron sample?
c. How many neutrons are in ?
d. Why don't any of the isotopes of Iron have the atomic mass of localid="1653290415917" listed on the periodic table?
Write the electron arrangement for each of the following
elements: (Example: sodium)
a. Phosphorus
b. Neon
c. Sulfur
d. Magnesium
e. Aluminum
f. Fluorine
Place the elements in each set in order of decreasing atomic size.
a. Cl, S, P
b. Ge, Si, C
c. Ba, Ca, Sr
d. S, O, Se
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