Periodic Trends_2021

When considering the successive ionization energies of ₁₃Al, which pair of values might be expected to exhibit greatest difference?

• 1st – 2nd

• 2nd – 3rd

• 3rd – 4th

• 5th – 6th

In the periodic table, as the atomic number increases from 11 to 17, what happens to atomic radius?

• It remains constant

• It decreases

• It increases, then decreases

• It increases

Listed below are the characteristics of an element from the periodic table:

* It is a nonmetal * It has 7 valence electrons * It is used to purify and disinfect water

To which group in the periodic table does this element belong?

• halogens

• noble gases

• alkaline earth metals

• transition elements

Which of the following is a property of alkali metals?

• they are so hard

• they are stored in water

• they are in group 7A

• they are very reactive

Which one of the following element is both malleable and able to conduct heat?

• neon

• hydrogen

• gold

• sulfur

Which characteristics both generally decrease when the elements in the third period on the periodic table are considered in order from left to right ( → )?

• Electron affinity and electronegativity

• Nonmetallic properties and atomic radius

• Metallic properties and atomic radius

• Nonmetallic properties and ionization energy

Which of the following describes the energy change associated with the following process?

Na _(g) + energy → Na+ _(g) + e−

• first ionization energy

• second electron affinity

• electronegativity

• first electron affinity

The ion X⁺¹ has 18 electrons. What is the place of the element X in the periodic table?

• 4th period 1A

• 3rd period 3A

• 5th period 6A

• 2nd period 8A

Which of the following generally applies to noble gases?

(IE: ionization energy, El: electronegativity, Re: reactivity)

• low IE, low El, high Re

• low IE, low El, low Re

• high IE, low El, low Re

• high IE, high El, high Re

How are the elements arranged in MODERN periodic table?

according to their …….

• neutron number

• charge

• mass number

• atomic number