Periodicity - Chemistry

The trends on the periodic table are dependent on..

• how attracted a valence electron is to the nucleus

• how attracted valence electrons are to each other

• how attracted a valence electrons is to a non valence electron

• how attracted a non valence electron is to the nucleus

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What makes a valence electron more attracted to the nucleus?

• less distance between the nucleus and having less protons

• less distance between the nucleus and having more protons

• more distance between the nucleus and having less protons

• more distance between the nucleus and having more protons

• less distance and having more valence electrons

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NGSS.HS-PS1-2

What is the tendency of an atom to attract electrons towards itself in a bond?

• atomic radius

• ionization energy

• shielding

• Electronegativity

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NGSS.HS-PS1-2

The higher the ionization energy...

• the more attracted the valence electron is to the nucleus so it is harder to remove

• the less attracted the valence electron is to the nucleus so it is easier to remove

• the more attracted the valence electron is to another electron, so it is harder to remove

• the more repelled a valence electron is to another electron, so it is easier to remove

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NGSS.HS-PS1-1

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Which is larger... P or P^3- ?

• P^3- because it gains an energy level
• P^3- due to extra electron repulsion
• P because it loses an energy level
• P because of extra electron repulsion

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NGSS.HS-PS1-1

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Why does ionization energy decrease going down a group?

• Adding more energy levels makes the ve- further from the nucleus so it is easier to remove

• There are more valence electrons in the outer shell so the ve- is easier to remove

• There are more protons in the nucleus so the ve- is easier to remove

• There are less protons in the nucleus so the ve- is easier to remove

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NGSS.HS-PS1-1

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Why does electronegativity increase across a period?

• Adding more energy levels makes the ve- further from the nucleus
• There are more valence electrons in the outer shell
• There are more protons  in the nucleus
• There are less protons in the nucleus

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which is smaller... Mg or Mg²⁺ ?

• Mg because it gains an energy level
• Mg due to extra electron repulsion
• Mg²⁺ because of extra electron repulsion
• Mg²⁺ because it loses an energy level

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NGSS.HS-PS1-1

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List the following in order of weakest to strongest ionization energy.
P, Cs, Co, Sr

• P, Co, Sr, Cs
• Cs, Sr, Co, P
• Sr, Cs, Co, P
• P, Co, Cs, Sr

Tags

NGSS.HS-PS1-1

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List the following from largest to smallest atomic radius.
P, Cs, Co, Sr

• P, Co, Sr, Cs
• P, Cs, Co, Sr
• Cs, Sr, Co, P
• Sr, Cs, Co, P

Tags

NGSS.HS-PS1-1