Periodic Table : Lesson 4

Presentation

•

Chemistry

•

University

•

Medium

•

NGSS

HS-PS1-1, HS-PS1-2

Standards-aligned

Mohamad Termizi Nurdin

Used 12+ times

FREE Resource

11 Slides • 7 Questions

Periodic Table : Lesson 4

by Mohamad Termizi Nurdin

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Have you watch the clip?

Multiple Choice

The _______ the principal quantum number, the _______the attraction towards nucleus, the _______ the ionization energy

greater, stronger, lower

greater, weaker, lower

greater, weaker, higher

lower, stronger,

lower

Fill in the Blanks

Ionisation energy is _________energy need to ________ one mole of electron from one mole of gaseous atom at ground state.

Type answer...

Multiple Choice

1. The ______the atomic radius, the ________the attraction, the _______the ionisation energy.

smaller, stonger, higher

bigger, weaker, higher

Multiple Choice

Across a period, Ionisation energy ____a____

Down a group, ionisation energy ____b_____

a : increase

b: decrease

a : increase

b: increase

a : decrease

b: decrease

Open Ended

Explain why second ionisation energy, IE₂ is higher than first ionisation energy, IE₁

Type response here

Trend of IE across period 2 and 3

Basically IE getting higher across period 2 and 3
However , there are some irregularities cases in the trend
Be and B AND N and O in period 2
Mg and Al AND P and S in period 3

Irregularities in period 2

Irregularities period 2

Irregularities in period 3

Irregularities period 3

Thank you

Open Ended

Atomic size aluminium is smaller than aluminium. However, IE₁ magnesium higher than IE₁ aluminium. Explain the observation.

Type response here

Periodic Table : Lesson 4

by Mohamad Termizi Nurdin

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