1, this element has a complete outermost energy level and is found in the 5th period.
2. this element has 2 electrons it its outermost energy level and belongs to the 2nd period.
3. this element has 3 electrons in its lewis dot structure and is in the 3p orbital section.
4. this element has 74 protons.
5.this element in the 4th period wants to gain one electron to make an ionic bond.
6. this element is the halogen in the 5th period.
7. this metalloid has 3 electrons in its 5p orbitals.
8. this element in the 5th period wants to lose two electrons to make an ionic bond.
9. this malleable metal has an atomic number of 47.
10.this element in the 2nd period will form an ionic compound with a 1: 1 atom ratio with magnesium.
11.this element has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p4.
12. this element was named for the scientist who discovered the nucleus of the atom using gold foil.
13. this noble gas belongs to the 6th period.
14. this element has 1 electron in its 4d orbital section.
15. this 3rd period element will not form compounds because it fits the octet rule.