Question

What are the elements in Period $2$ that are metals?

Answer 1

A metal is a substance that has a lustrous appearance when freshly prepared, polished, or fractured, and it conducts electricity and heat comparatively well. Metals are malleable which means metals can be beaten into thin sheets or ductile which means metals can be drawn into wires.

Complete step-by-step answer:
The periodic table, also called the periodic table of elements, is a tabular representation of chemical elements organised by atomic number, electron arrangement, and recurrent chemical properties.

The table has seven rows, known as periods. The elements in the columns, referred to as groups, have identical chemical properties. Metals are on the left and nonmetals are on the right side in the periodic table. Metalloids separate metals and non metals in the periodic table.

The elements in the second period are Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine and neon. Among this, Lithium and Beryllium are the elements that are metals.
Carbon, Nitrogen, Oxygen and Fluorineare the elements that are non-metals. Also, Boron is the only metalloid in the second period.

Therefore, we can conclude that Lithium and Beryllium are the elements in Period $2$ that are metals.

Note: A metalloid is a substance with properties that lie in between metals and nonmetals. Semimetals is another name for metalloids.
Four Characteristics of metalloids are:
$1)$ The appearance is similar to that of metals.
$2)$ They have a lower conductive value than metal.
$3)$ They are porous in comparison to metals.
$4)$ In addition, metalloids have non metallic chemical properties.