Unit 7: Atomic Structure & Periodic Table

Element X is in the noble gas family. Which element would have an atomic structure most similar to Element X?

• Xenon (Xe)

• Strontium (Sr)

• Rubidium (Rb)

• Sulfur (S)

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What group of the Periodic Table does this atom belong to?

• Group 1: Alkaline Metals

• Group 2: Earth Metals

• Group 17: Halogens

• Group 18: Noble Gases

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What would alkaline earth metals have in common?

• Same atomic number

• Same mass

• Same chemical properties

• Nothing in common

Elements with seven valence electrons tend to form covalent bonds by sharing electrons. Which of the following elements would tend to form a covalent bond?

• Sodium (Na)

• Magnesium (Mg)

• Chlorine (Cl)

• Neon (Ne)

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Which of the following elements has a high melting point, is solid at room temperature, and is a good conductor of electricity?

• Oxygen (O)

• Silicon (Si)

• Iron (Fe)

• Neon (Ne)

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Which of the following best describes the atomic structure shown above?

• Protons and electrons are in the nucleus, while neutrons orbit outside.

• Neutrons and protons are in the nucleus, while electrons orbit outside.

• Positive-charged particles are in the nucleus, while neutral particles orbit outside.

• Negative-charged particles are in the nucleus, while positive particles orbit outside.

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Reactivity of an element is mainly influenced by which of the following?

Select two correct answers.

• Size of the nucleus

• Number of valence electrons

• Number of protons

• Number of neutrons

• Size of the atom

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The following are characteristics of an element family:
Reacts violently with water
Includes Sodium and Potassium
Identify the number of valence electrons

• 1

• 2

• 7

• 8

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Which groups are going to have the most reactive elements. Select two

• Group 1: Alkaline Metals

• Group 2: Earth Metals

• Group 17: Halogens

• Group 18: Noble Gases

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Which group of elements has similar bonding properties?

• K, Ca, and Sc

• Kr, Cl, and O

• Be, C, and O

• Li, K, and Fr

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