Periodic Table and Periodic Trends

Periodic Table and Periodic Trends

11th Grade

•

46 Qs

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Periodic Table and Periodic Trends

Periodic Table and Periodic Trends

Assessment

Quiz

•

Chemistry

•

11th Grade

•

Hard

•
NGSS
HS-PS1-1, HS-PS1-2, HS-PS1-4

Standards-aligned

Created by

Kenneth Hegwood

Used 17+ times

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46 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

As you move down a group, atomic radius increases because - 

you add more and more neutrons

you add more and more protons

you add more and more shells (energy levels)

you add more atomic mass

Answer explanation

As you move down a group, more energy levels (shells) are added, which increases the distance between the nucleus and the outermost electrons, resulting in a larger atomic radius.

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The atom with the largest atomic radius in Group 18 is - 

Ar

He

Kr

Rn

Answer explanation

In Group 18, the atomic radius increases down the group due to the addition of electron shells. Radon (Rn) is the heaviest noble gas and has the largest atomic radius compared to Argon (Ar), Helium (He), and Krypton (Kr).

3.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

As you move down a group / family, valence electrons are in a higher _______ ______?

Answer explanation

As you move down a group in the periodic table, the valence electrons occupy higher energy shells, which means they are further from the nucleus and have higher energy levels.

Tags

NGSS.HS-PS1-1

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 

the number of protons increases, so attraction to electrons increases

the number of energy levels increases

the number of electrons increases

the atomic mass increases

Answer explanation

As you move across the periodic table, the number of protons increases, enhancing the positive charge in the nucleus. This increased attraction pulls electrons closer, resulting in a smaller atomic radius.

Tags

NGSS.HS-PS1-1

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The atom with the largest atomic radius in Period 4 (row 4) is - 

K

Kr

Fe

Fe

Answer explanation

In Period 4, atomic radius increases down the group. Potassium (K) is in Group 1 and has the largest atomic radius due to having fewer protons and a larger electron cloud compared to Kr and Fe, which are further to the right.

Tags

NGSS.HS-PS1-1

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Francium (Fr) has the lowest ionization energy in Group 1 because - 

it has the smallest number of valence electrons

it has the greatest atomic mass

it has the greatest number of protons, so it attracts its electrons the strongest

its 1 valence electron is very far from the nucleus, so little energy is needed to remove it

Answer explanation

Francium has its only valence electron far from the nucleus, resulting in a weak attraction. This means less energy is required to remove it, leading to the lowest ionization energy in Group 1.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The element with the smallest ionization energy in Period 6 is - 

Rn

Cs

Os

Tm

Answer explanation

The element with the smallest ionization energy in Period 6 is Cs (cesium). As an alkali metal, Cs has a lower ionization energy compared to other elements in the period, making it easier to remove an electron.

Tags

NGSS.HS-PS1-1

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