Question

identify the element as a metal or nonmetal or metalloid.
metal metalloid nonmetal
strontium, sr (38)
boron, b (5)
potassium, k (19)
xenon, xe (54)
sulfur, s (16)

Explanation:

• Strontium (Sr): Metals are typically found on the left - hand side of the periodic table. Strontium is in group 2 (alkaline earth metals), which are metals. They have properties like high electrical conductivity, malleability, and ductility.
• Boron (B): Boron is located in the p - block. It has some properties of metals (like being a good conductor at high temperatures) and some of non - metals (like forming covalent compounds). It is classified as a metalloid.
• Potassium (K): Potassium is in group 1 (alkali metals). Alkali metals are highly reactive metals. They have one valence electron, which they easily lose to form cations, and they exhibit metallic properties such as luster and high thermal conductivity.
• Xenon (Xe): Xenon is a noble gas. Noble gases are non - metals. They have full valence shells, are chemically inert (under normal conditions), and do not readily lose or gain electrons to form ionic or covalent bonds in the same way as metals or metalloids.
• Sulfur (S): Sulfur is a non - metal. It is in the p - block. Non - metals generally have properties such as low electrical conductivity, brittleness (in solid form), and they tend to gain electrons to form anions.

Answer:

• Strontium, Sr (38): metal
• Boron, B (5): metalloid
• Potassium, K (19): metal
• Xenon, Xe (54): nonmetal
• Sulfur, S (16): nonmetal