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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