Electron Configuration & Periodic Trends

Aluminum has an atomic number of 13. What should is the electron configuration of aluminum?

• 1s2 2s2 3p1

• 1s2 2s2 2p6 3s3

• 1s2 2s2 2p6 3s2 3p1

• 1s2 1p2 2s2 2p2 3s2 3p3

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What is the element with the highest electronegativity value?

• helium

• cesium

• fluorine

• calcium

Which periodic family has 7 valence electrons?

• Alkali metals

• Alkaline Earth metals

• Halogens

• Noble Gases

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How many valence electrons are in the atom with the electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d4?

• 2

• 4

• 8

• 12

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How many electrons can occupy any p sublevel?

• six

• two

• no more than eight

• ten

How many electrons can occupy any d sublevel?

• six

• two

• no more than eight

• ten

Identify the element having the lowest electronegativity from the list of elements given below:

• Selenium

• Cesium

• Sulfur

• Magnesium

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Elements in the s-block have properties most associated with

• gases

• nonmetals

• metals

• metalloids

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Which of these elements has 3 valence electrons?

• Boron

• Rubidium

• Arsenic

• Carbon

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Which of these elements has 5 valence electrons?

• Boron

• Rubidium

• Arsenic

• Carbon

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