Question

1. name noble gas that is in the 1st period in the periodic table.
2. what family is the element calcium in?
3. what family is the element fr in?
4. sodium is a metal in the ______________________ family.
5. argon is an element in the ______________________ family.
6. krypton is an element in the ______________________ family.
7. magnesium is an element in the ______________________ family.
8. cesium has how many protons and electrons?
9. what is the atomic symbol for sulfur?
10. how many neutrons does cr have?
11. what is the name for the atomic symbol i?
12. what is the atomic weight of zn?

fill in the blanks with one of the following words, metal, nonmetal, or metalloid.

1. silicon is a ______________.
2. au is a ______________.
3. antimony is a ____________.
4. xenon is a ______________.
5. chromium is a ______________.
6. fe is a ______________.
7. arsenic is a ______________.
8. oxygen is a ______________.
9. boron is a ______________.
10. ag is a ______________.

what is the formula for the atomic weight (mass) of an atom?
why is the atomic weight a decimal on the periodic table?

Explanation:

Answer:

s are based on periodic table properties, element families, and atomic structure rules.