Atomic Structure

Atomic Structure

Before we start, get ready your notes on Atomic Structure and the Periodic Table.

• Let's begin with a recap on sub-atomic particles.

• View the video carefully in order to answer some questions.

Multiple Select

Select the statement(s) that are true about the sub-atomic particles.

• Protons are positively-charged.

• Protons are negatively-charged.

• Neutrons are electrically neutral.

• Electrons are positively-charged.

• Electrons are negatively-charged.

Multiple Select

Select the particle(s) that are found in the nucleus of the atom.

• protons

• neutrons

• electrons

Multiple Choice

Is the following statement true or false?

The mass of an atom is largely determined by the number of protons and neutrons.

• True

• False

View the next video on isotopes before you apply what you learnt to answer some questions.

Multiple Choice

Which of the following is the definition of isotopes?

Isotopes are atoms of the same element with ......

• the same number of neutrons but different number of protons

• the same number of protons but different number of electrons

• the same number of protons but different number of neutrons

Multiple Select

Element Y is represented by the symbol

²³₁₁Y

Select the statements that are true about an atom of element Y.

• An atom of Y has 11 protons.

• An atom of Y has 12 protons.

• An atom of Y has 12 neutrons.

• An atom of Y has 11 neutrons.

• An atom of Y has 11 electrons.

Multiple Choice

Which of the following can be an isotope of element Y?

²³ ₁₁Y

• ²³₁₀A

• ²⁴₁₁D

• ²⁴₁₂E

View the next video to understand how electrons are arranged in electron shells then answer some questions.

Multiple Choice

Is the following statement true or false?

The electrons of an atom are found in electron shells of same energy level.

• True

• False

Multiple Choice

What will be the electronic configuration of this atom?

¹⁴₇Z

• 7

• 14

• 2,5

• 2,8,4

Multiple Choice

Is this atom stable?

¹⁴₇Z

• Yes

• No

Multiple Choice

What is the maximum number of electrons in the first electron shell for an atom to be stable?

• 2

• 8

Multiple Choice

What is the maximum number of electrons in the second electron shell for an atom to be stable?

• 2

• 8

• 18

Multiple Choice

Which do you think is the easier way for an atom of ¹⁴₇Z to be stable?

• lose 5 electrons

• gain 3 electrons