Question

periodic table scavenger hunt! prework part 1: periodic table practice instructions: using your periodic table as your
oad - map,\ answer the following questions: 1. i have an atomic mass of 197. who am i? 2. i have 12 electrons and a charge of 2+. who am i? 3. i have an atomic number of 10. who am i? 4. i am an alkali metal in the period 2. who am i? 5. we are liquid at room temperature. who are we? 6. i am a metalloid located in period 3 and group 14? who am i? 7. indium has a charge of - 3. how many protons and how many electrons does it have? # of protons: __ # of electrons: 8. even though my family is called alkali metals, i am not a metal? who am i? 9. i am an element that is 10 times the mass of helium. who am i? 10. i am in period 5 group 11. who am i? 11. i have 19 protons. who am i? 12. i am an inert gas in period 2. who am i? 13. i am a transition metal in group 10 with 31 neutrons. who am i? 14. i am named after the united states since i was discovered here. what is my name and how many protons do i have? # protons: __ 15. i am the only halogen that is a liquid at room temperature. who am i? 16. what is the name of the element with the symbol \sn\?

Explanation:

Step1: Find element with atomic mass 197

Look up on periodic - table. Gold (Au) has an atomic mass of approximately 197.

Step2: Determine element with 12 electrons and + 2 charge

A neutral atom has equal number of protons and electrons. With a + 2 charge, the neutral atom had 14 electrons, so 14 protons. Magnesium (Mg) has atomic number 14.

Step3: Identify element with atomic number 10

Neon (Ne) has atomic number 10.

Step4: Find alkali metal in period 2

Lithium (Li) is an alkali metal in period 2.

Step5: List elements liquid at room temperature

Bromine (Br) and Mercury (Hg) are liquid at room temperature.

Step6: Locate metalloid in period 3 and group 14

Silicon (Si) is a metalloid in period 3 and group 14.

Step7: Calculate protons and electrons for Indium with - 3 charge

Indium (In) has atomic number 49, so 49 protons. With a - 3 charge, it has 49 + 3=52 electrons.

Step8: Identify non - metal in alkali metal family

Hydrogen (H) is often considered part of the alkali metal family but is a non - metal.

Step9: Find element 10 times mass of Helium

Helium has atomic mass of 4, so element with mass 40 is Calcium (Ca).

Step10: Identify element in period 5 group 11

Silver (Ag) is in period 5 group 11.

Step11: Determine element with 19 protons

Potassium (K) has 19 protons.

Step12: Locate inert gas in period 2

Neon (Ne) is an inert gas in period 2.

Step13: Identify transition metal in group 10 with 31 neutrons

Nickel (Ni) is in group 10. If it has 31 neutrons and atomic number 28, it is a common isotope of Nickel.

Step14: Identify element named after US

Americium (Am) is named after the United States and has 95 protons.

Step15: Find liquid halogen at room temperature

Bromine (Br) is the only liquid halogen at room temperature.

Step16: Name element with symbol Sn

Tin is the element with symbol Sn.

Answer:

1. Gold (Au)
2. Magnesium (Mg)
3. Neon (Ne)
4. Lithium (Li)
5. Bromine (Br), Mercury (Hg)
6. Silicon (Si)
7. # of protons: 49, # of electrons: 52
8. Hydrogen (H)
9. Calcium (Ca)
10. Silver (Ag)
11. Potassium (K)
12. Neon (Ne)
13. Nickel (Ni)
14. Americium (Am), # protons: 95
15. Bromine (Br)
16. Tin