Answer :
The order is metals, metalloids, non metals in which elements are found as you move from left to right across a period.
Metals
When we move from left to right across a period Metals are located on the left hand side of the periodic table. Metals have high thermal conductivity.
Metalloids
When we move from left to right across a period Metalloids are located between metals and nonmetals. Metalloids are present p-block elements. Metalloids have good thermal conductivity.
Nonmetals
When we move from left to right across a period Nonmetals are located on the right hand side of the periodic table. Non metals have low melting point and boiling point. Non metals have low thermal conductivity.
Thus, from conclusion we can say that the order is metals, metalloids, non metals in which elements are found as you move from left to right across a period.
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Final answer:
As one moves from left to right across a period on the periodic table, they will encounter metals, followed by metalloids, and then nonmetals. Metals are lustrous and conductive, while nonmetals are typically dull and non-conductive. Metalloids exhibit properties in between these two categories.
Explanation:
Order of Elements Across a Period
As you move from left to right across a period in the periodic table, the types of elements you encounter change. Initially, you will find metals, which are characterized by their lustrous appearance, high conductivity for heat and electricity, and their malleability and ductility. As you proceed toward the right, you reach metalloids or semimetals, which are located along the zigzag line that divides metals and nonmetals. These elements exhibit intermediate properties between metals and nonmetals. Finally, on the far right side of the periodic table, you encounter nonmetals. Nonmetals are generally not lustrous, are poor conductors of heat and electricity, and when solid, they tend to be brittle.
