Question

the atomic number of this element is 82. this element is directly below the element that has 56 protons. this element has 6 protons in its nucleus. this element is directly below the element that has 55 electrons surrounding its nucleus.

Explanation:

Step1: Recall atomic - number concept

The atomic number is equal to the number of protons. For a neutral atom, the number of electrons is equal to the number of protons.

Step2: Analyze first statement

The element with atomic number 82 is lead (Pb).

Step3: Analyze second statement

The element with 56 protons has atomic number 56, which is barium (Ba). The element directly below Ba in the periodic - table is radium (Ra). This is not relevant to the final answer as the first statement already gives a definite element.

Step4: Analyze third statement

The element with 6 protons has atomic number 6, which is carbon (C). This is not relevant to the element with atomic number 82.

Step5: Analyze fourth statement

The element with 55 electrons (for a neutral atom, number of electrons = number of protons) has atomic number 55, which is cesium (Cs). The element directly below Cs is francium (Fr). This is not relevant to the element with atomic number 82.

Answer:

Lead (Pb)