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Potassium Ion Formation and Properties

Potassium Ion Formation and Properties

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Olivia Brooks

FREE Resource

The video explains how to write the Lewis structure for the potassium ion (K+). It begins by discussing potassium in its neutral state, highlighting that it has one valence electron. The video then describes the process of forming the K+ ion by losing this electron, resulting in a positive charge. This loss leads to a stable electron configuration similar to a noble gas, with a full outer shell. The video concludes with a demonstration of the Lewis structure notation for K+, including the use of brackets.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of the video tutorial?

The periodic table

The history of potassium

The Lewis structure for K+

Chemical reactions of potassium

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the charge of potassium as found on the periodic table?

Variable

Neutral

Negative

Positive

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many valence electrons does neutral potassium have?

Zero

Eight

One

Two

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the electron configuration when potassium becomes K+?

It loses an electron

It loses a proton

It gains a proton

It gains an electron

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the loss of the outer shell electron in potassium result in?

A radioactive element

A positive ion

A negative ion

A neutral atom

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does potassium lose an electron to form K+?

To achieve a full outer shell

To decrease its atomic mass

To become more negative

To increase its atomic number

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the electron configuration of K+ similar to?

A noble gas

A transition metal

A halogen

An alkali metal

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