). In each of the following sets of elements, indicate which element shows the most active chemical behavior. B,Al,In  Na,Al,S  B,C,F

Choose the block of the periodic table where phosphorus is located. O s-block O f-block O outer block O d-block O p-block

The Periodic Table of Elements ETT 10 Down Acrest it gives the element's identity S. faund outside the atom's nucleus an element with an atomie number an electron in the outermost energy level 3. known as the A Family in the periodic table of elements 4 known as the B Family in the periodic table of elements . also known as a group of elementa in the periodic table 7. known as horizontal rows in the periodie table of elements an element with a chemical symbal H 10. 3. same as the atomic number

Which phrase beat describes the structure of an atom A: Nucleus surrounded by electrons in set orbits B: a core of protons surround by an electron cloud C: a solid ball of protons, neutrons, and electrons D: a Nucleus surrounded by an electron cloud

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B. Based on the items in A, draw an orbital diagram for each element. 1. S (sulfur) 2. Sc (scandium)