Understanding Periodic Table Trends

What is the main focus of the video as introduced by Jeremy Krug?

• Organic chemistry

• Molecular bonding

• Periodic table trends

• Chemical reactions

Which atom is larger, lithium or cesium, and why?

• Cesium, because it has more electron shells

• Lithium, because it has fewer electron shells

• Cesium, because it has fewer protons

• Lithium, because it is higher on the periodic table

How does atomic size change as you move across a period from left to right?

• It increases

• It decreases

• It remains the same

• It fluctuates randomly

Which element is likely to have a higher electronegativity, fluorine or sodium?

• Fluorine, because it attracts electrons strongly

• Sodium, because it has more protons

• Sodium, because it is on the left side of the table

• Fluorine, because it is a noble gas

What is the trend in electronegativity as you move from left to right across a period?

• It decreases

• It increases

• It varies unpredictably

• It remains constant

Which element would have a higher first ionization energy, neon or sodium?

• Neon, because it has more electron shells

• Neon, because it is a noble gas

• Sodium, because it is on the left side of the table

• Sodium, because it is a metal

How does first ionization energy change as you move down a group in the periodic table?

• It varies randomly

• It remains the same

• It increases

• It decreases

What is electron affinity?

• The repulsion between electrons

• The attraction between protons and neutrons

• The energy change when an atom gains an electron

• The energy change when an atom loses an electron

Which area of the periodic table generally has the highest electron affinity?

• Top left

• Bottom left

• Top right

• Bottom right

What is the general trend for electron affinity as you move from left to right across a period?

• It varies unpredictably

• It remains constant

• It increases

• It decreases