T3 Periodicity

Which of the following shows a general increase across period 3 from Na to Cl?

• ionic radius

• atomic radius

• ionization energy

• melting point

For which element are the group number and the period number the same?

• Li

• Be

• B

• Mg

Which is a liquid non-metal element at room temperature?

• H₂O

• Hg

• Br₂

• Ga

Which of the physical properties below decreases with increasing atomic number for both the alkali metals and the halogens?

I. Atomic radius

II. Ionization energy

III. Melting Point

• I only

• II only

• III only

• I and III only

Which statement is correct for a periodic trend?

• Ionization energy increases from Li to Cs

• Melting point increases from Li to Cs

• Ionization energy increased from F to I

• Melting point increases from F to I

The halogens are found in group

• 1

• 2

• 17

• 18

Energy required to remove one mole of electrons from one mole of a gaseous element.

• Electron affinity

• Atomic radius

• Ionization energy

• Electronegativity

An example of an amphoteric oxide of Group 3

• Na₂O

• SiO₂

• Al₂O₃

• P₄O₁₀

Which is the most reactive metal listed below?

• Li

• K

• Mg

• Pb

What is the maximum number of electrons that can occupy the 4th main energy level in an atom?

• 8

• 14

• 18

• 32