Periodic Table Trends

Which element is located in Group 3, Period 2?

• Magnesium

• Lithium

• Helium

• Boron

The electronegativity of an element is defined as…

• The ability of an atom to gain or attract additional electrons.

• The energy required to remove an electron from an atom.

• The ability of an element to chemically react with other elements or compounds.

• The size of an atom of a particular element.

Tags

NGSS.HS-PS1-2

In a Bohr diagram, the number of energy levels (represented by circles), corresponds to an element’s ______________

• Atomic Number

• Group/Family Number

• Mass Number

• Period Number

Which element will have the largest atomic radius?

• Ne

• Li

• Cs

• Rn

The periodic table is arranged by ______

• Atomic Mass

• Number of Electrons

• Atomic Number

• Atomic Weight

Tags

NGSS.HS-PS1-1

• B

• C

• K

• Ca

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why are elements at the bottom of the PT larger than those at the top?

• They have more orbitals

• They have more valence electrons

• They have more charge

• They have a weaker attraction

Tags

NGSS.HS-PS1-1

Why are elements at the top of the PT have higher electronegativity than those at the bottom?

• They have fewer orbitals, this makes them smaller and since electrons are closer to the nucleus there will be a stronger ability to attract electrons

• They have fewer valence electrons

• They have more orbitals, this makes them larger and since electrons are further from the nucleus there will be a stronger ability to attract electrons

Tags

NGSS.HS-PS1-1

Why are elements at the top of the PT have higher ionization energy than those at the bottom?

• They have fewer orbitals, this makes them smaller and since electrons are closer to the nucleus the attraction is stronger which makes it more difficult to remove

• They have fewer valence electrons

• They have more orbitals, this makes them larger and since electrons are further from the nucleus the attraction is weaker which make it easier to remove

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why are elements at the left of the PT larger than those at right?

• They have fewer orbitals

• They have more valence electrons

• Their electrons have a stronger attraction because there's more charge

• Their electrons have a weaker attraction because there's less charge

Tags

NGSS.HS-PS1-1