Periodic trends review

An element is a solid at room temperature, has luster, is conductive and malleable. During experimentation, it is found to have various ionic forms sometimes possessing a 2+ charge and others a 3+ charge. This element is most likely found in which area of the periodic table?

• Alkali metal family

• Alkaline earth metal family

• Transition metals

• Halogen family

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Which periodic family has a full outermost valence shell and rarely reacts with other elements?

• Alkali metals

• Alkaline Earth metals

• Halogens

• Noble gases

Which of these elements is the most reactive?

• potassium

• Calcium

• Scandium

• Titanium

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Chlorine, bromine, and iodine are halogens and share similar chemical properties. However, these elements have some very different physical properties. At room temperature, chlorine is a gas, bromine is a liquid, and iodine is a solid. Predict the physical states of fluorine at room temperature.

• solid

• liquid

• gas

• plasma

Neon is a noble gas. Which of the following describes neon?

• Neon has a very low chemical reactivity.

• Neon is highly electronegative.

• Neon is a solid at room temperature.

• Neon is a good conductor of heat.

Magnesium is an alkaline earth metal. With which group of elements is magnesium most reactive?

• nonmetals

• noble gases

• alkali metals

• transition metals

Alkali metals react very readily with halogens and form ionic compounds such as table salt (NaCI) and many others. Which of the following explanations most completely describes why these two families of elements reacts readily?

• Alkali metals are negative and halogens are positive, so they attract each other.

• The alkali metals have one valence electron, and the halogens are one short of an octet.

• Alkali metals and halogens can very easily share eight valence electrons between them.

• The halogens very easily donate valence electrons to the alkali metals so that all have eight.

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From which of the following atoms would it be the most difficult to remove an electron?

• Sodium

• Aluminum

• Sulfur

• Chlorine

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Using the Periodic Table, predict which elements will have similar chemical properties or reactivity.

• Cadmium, calcium, and carbon

• Magnesium, strontium, and barium

• Rubidium, yttrium, and zirconium

• Nitrogen, sulfur, and bromine

A sample of an unknown element, Gg, exhibits the following properties.

• Exists naturally as a diatomic gas

• Easily forms anions by accepting electrons

• Reacts violently with alkali metals

To which chemical family does element Gg most likely belong?

• Alkaline Earth Metals

• Metalloids

• Halogens

• Noble gases