David is learning about electron configurations. He finds that an element has its last electron in the s orbital. He wants to know which block of the periodic table this element belongs to. What is the block called?

Which block contains transition metals?

Most reactive non-metals belong to:

What is the modern periodic law?

Shielding effect increases when:

Atomic radius generally decreases across a period because:

Ahmed is comparing the boiling points of metals and non-metals. He knows that metals generally have high boiling points. Which of the following is a non-metal with a very low boiling point?

Ionization energy decreases down a group due to:

Chloe is studying the reactivity of halogens. She performs a displacement reaction and observes that chlorine displaces bromine from sodium bromide. Which statement is true about this reaction?

Lara is studying the reactivity of alkali metals. She knows that they react vigorously with water. As we move down Group 1, the reactivity of alkali metals:

Most reactive metals are found in:

Hina is studying ionization energy. She knows that ionization energy is the energy required to remove an electron from a gaseous atom. As we move across a period from left to right, ionization energy generally:

Which property helps predict bonding behavior?

Waseem is learning about the position of an unknown element in the periodic table. He predicts that an element with atomic number 19 will be in which period and group?

Metals are generally found on which side of the periodic table?

Julia is studying electronegativity. She knows it is the ability of an atom to attract electrons in a chemical bond. As we move across a period from left to right, electronegativity generally:

Quinn is studying the electrical conductivity of metals. He knows that metals are good conductors of electricity. Which of the following is the best conductor of electricity among metals?

Elements in the same group have the same:

Waseem is studying the boiling points of metals and non-metals. He knows that metals generally have high boiling points. Which of the following is a metal with a very low boiling point?

Which periodic trend explains reactivity of metals?

Which block elements are also called representative elements?

Uma is comparing the thermal conductivity of metals and non-metals. She knows that metals are good conductors of heat. Which of the following is a non-metal with good thermal conductivity?

Who proposed the modern periodic law?

Which of the following is a metalloid?

Khalid is comparing the metallic character of elements. He knows that metallic character decreases across a period. Which element in the third period is the most metallic?

Nora is studying the properties of noble gases. She knows that they are generally unreactive due to their stable electron configuration. Which noble gas is used in balloons because of its low density?

Uma is comparing the physical properties of metals and non-metals. She knows that metals are good conductors of heat and electricity. Which of the following is a property of non-metals?

Non-metals are mostly found on:

Oliver is studying the thermal stability of hydrogen halides. He knows that HF is the most thermally stable. As we move down the group, the bond strength of H-X:

Why noble gases are chemically inert?