Question

there are a number of online periodic tables that you can use. one that is particularly useful is called ptable. with ptable you can hover over a class name like \metals\ and see the corresponding elements isolated and highlighted. this is a great way to become familiar with the various classes of elements. for instance, hovering over
onmetal\ isolates this class of elements and highlights them in green. for each of the following elements, indicate how they are classified. hydrogen (h) choose sodium (na) choose calcium (ca) choose copper (cu) choose silicon (si) choose carbon (c) choose argon (ar) choose

Explanation:

Hydrogen is a non - metal. Sodium, calcium, and copper are metals. Silicon is a metalloid. Carbon is a non - metal. Argon is a non - metal (noble gas).

Answer:

Hydrogen (H): Non - metal
Sodium (Na): Metal
Calcium (Ca): Metal
Copper (Cu): Metal
Silicon (Si): Metalloid
Carbon (C): Non - metal
Argon (Ar): Non - metal (noble gas)