Question

this element has 116 electrons. this element has one more proton than lithium (li). this element has 2 fewer protons than tennessine (ts). this element is directly below the element whose atomic number is 6. this element has 2 fewer protons than phosphorus (p). the atomic number of this element is 82. this element has 2 more protons than boron (b). this element has one more proton than caesium (cs). this element has 5 protons in its nucleus. the atomic number of this element is 10. this element has 54 electrons surrounding its nucleus. this element has 4 more protons than silicon (si). this element has 2 fewer electrons than strontium (sr) surrounding its nucleus. the atomic number of this element is 31. this element has one less proton than arsenic (as).

Explanation:

Step1: Recall atomic number - electron relationship

In a neutral atom, the number of electrons equals the atomic number. For the first row, since the element has 116 electrons, its atomic number is 116, and the element symbol is Lv.

Step2: Find element based on proton - comparison

Lithium (Li) has an atomic number of 3. An element with one more proton has an atomic number of 4, which is Be.

Step3: Use atomic - number of known element

Tennessine (Ts) has an atomic number of 117. An element with 2 fewer protons has an atomic number of 115, which is Mc.

Step4: Locate element in periodic table

The element with atomic number 6 is Carbon (C). The element directly below it has an atomic number of 14, which is Si.

Step5: Compare protons of given elements

Phosphorus (P) has an atomic number of 15. An element with 2 fewer protons has an atomic number of 13, which is Al.

Step6: Identify element by atomic number

An element with atomic number 82 is Pb.

Step7: Compare protons of given elements

Boron (B) has an atomic number of 5. An element with 2 more protons has an atomic number of 7, which is N.

Step8: Compare protons of given elements

Caesium (Cs) has an atomic number of 55. An element with one more proton has an atomic number of 56, which is Ba.

Step9: Identify element by proton number

An element with 5 protons in its nucleus has an atomic number of 5, which is B.

Step10: Identify element by atomic number

An element with atomic number 10 is Ne.

Step11: Recall atomic number - electron relationship

Since the element has 54 electrons, its atomic number is 54, and the element is Xe.

Step12: Compare protons of given elements

Silicon (Si) has an atomic number of 14. An element with 4 more protons has an atomic number of 18, which is Ar.

Step13: Recall atomic number - electron relationship

Strontium (Sr) has an atomic number of 38. An element with 2 fewer electrons has an atomic number of 36, which is Kr.

Step14: Identify element by atomic number

An element with atomic number 31 is Ga.

Step15: Compare protons of given elements

Arsenic (As) has an atomic number of 33. An element with one - less proton has an atomic number of 32, which is Ge.

Answer:

The element - symbol pairs are correctly matched as shown in the table. Each row's description correctly corresponds to the element symbol in column B.