Question

1. i am in period 4 group 6. who am i? 19. i have 53 protons. who am i? 20. i am the heaviest nonmetal in period 2. who am i? 21. i am a transition metal in group 10 with 31 neutrons. who am i? 22. i am the only metalloid in period 6. who am i? 23. i am the only nonmetal on the left side of the periodic table. who am i? 24. i am named after the united states since i was discovered here. what is my name and how many protons do i have? , # protons: 25. how many elements have a symbol that starts with the vowel “a”? 26. i have 86 electrons when i am neutral. who am i and how many neutrons do i have? identity: # of neutrons: 27. i am the only halogen that is a liquid at room temperature. who am i? 28. what is the name of the element with the symbol “sn”? 29. i am a transition metal and i have two vowels in my symbol. who am i? 30. there are two elements named after the us state that they were discovered in. who are they? 31. how many noble gases are there? 32. who is the heaviest element(s)? 33. i am in group 16 and period 7. who am i? 34. i was named after the scientist who discovered the nucleus. what’s my name and how many neutrons do i have? 35. i am an alkaline earth metal in period 6. who am i?

Explanation:

Step1: Recall periodic - table position

In the periodic table, period 4 group 6 corresponds to chromium (Cr).

Step2: Use proton - number property

The number of protons is equal to the atomic number. The element with 53 protons is iodine (I).

Step3: Identify period 2 non - metal

In period 2, the heaviest nonmetal is neon (Ne).

Step4: Determine transition metal

For a transition metal in group 10, with 31 neutrons, assuming the most common isotope, nickel (Ni) has an atomic number of 28 and can have an isotope with 31 neutrons.

Step5: Locate metalloid in period 6

The only metalloid in period 6 is polonium (Po).

Step6: Find left - side nonmetal

The only nonmetal on the left side of the periodic table is hydrogen (H).

Step7: Identify US - named element

Americium (Am) is named after the United States. Its atomic number (number of protons) is 95.

Step8: Count elements with 'A' symbol

The elements with symbols starting with 'A' are argon (Ar), aluminum (Al), actinium (Ac), and astatine (At), so there are 4.

Step9: Determine element with 86 electrons

A neutral atom has the same number of electrons as protons. The element with 86 protons is radon (Rn). The number of neutrons in a common isotope is 136.

Step10: Identify liquid halogen

The only halogen that is a liquid at room temperature is bromine (Br).

Step11: Name element with 'Sn' symbol

The element with the symbol 'Sn' is tin.

Step12: Find transition metal with two vowels

The transition metal with two vowels in its symbol is osmium (Os).

Step13: Name US - state named elements

The two elements named after US states are californium (named after California) and berkelium (named after Berkeley, California).

Step14: Count noble gases

The noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn), so there are 6.

Step15: Identify heaviest element

The heaviest naturally - occurring element is uranium (U), and among synthetic elements, there are heavier ones like oganesson (Og).

Step16: Locate group 16 period 7 element

The element in group 16 and period 7 is livermorium (Lv).

Step17: Name element after nucleus discoverer

Rutherfordium (Rf) is named after Ernest Rutherford who discovered the nucleus. A common isotope has 108 neutrons.

Step18: Identify period 6 alkaline earth metal

The alkaline earth metal in period 6 is barium (Ba).

Answer:

1. Chromium (Cr)
2. Iodine (I)
3. Neon (Ne)
4. Nickel (Ni)
5. Polonium (Po)
6. Hydrogen (H)
7. Americium (Am), 95
8. 4
9. Radon (Rn), 136
10. Bromine (Br)
11. Tin
12. Osmium (Os)
13. Californium, Berkelium
14. 6
15. Uranium (naturally - occurring), Oganesson (synthetic)
16. Livermorium (Lv)
17. Rutherfordium (Rf), 108
18. Barium (Ba)