Match each group of elements with the correct physical and chemical properties. 1. metal 2. non-metal 3. metalloid 4. noble gas a. moderate ability to conduct heat and electricity; solid at room temperature; reacts with other elements b. gaseous; will not react with other elements c. nonmagnetic; does not conduct heat or electricity well; does react with other elements d. malleable; polishes to a luster; conducts heat and electricity well; reacts with other elements

Explanation:

Metals are the substances which lose electrons to attain stability and hence they form cations.

Metals are good conductors of heat ant electricity and generally they are solid at room temperature. Metals have a shiny surface and they are also malleable and ductile.

Non-metals are the substances which gain electrons to gain stability and hence they form anions.

Non-metals are bad conductors of heat and electricity. They are brittle and non-shiny in nature.

Metalloids are the substances which show properties of both metals and non-metals.

Metalloids are moderately able to conduct heat and electricity. Generally metalloids are solid at room temperature. They are also able to react with other molecules.

Noble gases are the species that contain completely filled orbitals. Hence, they are unreactive in nature.

Thus, we can conclude that the group of elements with the correct physical and chemical properties are matched as follows.

1. METAL - malleable; polishes to a luster; conducts heat and electricity well; reacts with other elements.

2. NON-METAL - nonmagnetic; does not conduct heat or electricity well; does react with other elements.

3. METALLOID - moderate ability to conduct heat and electricity; solid at room temperature; reacts with other elements.

4. NOBLE GAS - gaseous; will not react with other elements.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

answer: b.

explanation: