Page 47 - Hybrid PBD 2022 Tg 4 - Kimia

Kimia Tingkatan 4 Bab 2

PBD 2.3 Struktur atom
PBD
PBD
Atomic Structure Buku Teks ms. 32 – 36

1. Padankan definisi nombor proton dan nombor nukleon dengan betul. SP 2.3.1 TP1
Match the definitions of proton number and nucleon number correctly.

Bilangan neutron di dalam nukleus sesuatu atom.
The number of neutronss in the nucleus of an atom.
(a) Nombor proton
Penerbitan Pelangi Sdn Bhd. All Rights Reserved
Proton number
Bilangan proton di dalam nukleus sesuatu atom.
The number of protons in the nucleus of an atom.

Bilangan proton dan neutron di dalam nukleus sesuatu
atom.
The number of protons and neutrons in the nucleus of an atom.
(b) Nombor nukleon
Nucleon number
Nombor proton dan bilangan neutron di dalam nukleus
sesuatu atom.
Proton number and number of neutrons in the nucleus of an atom.

2. Selesaikan masalah berikut. SP 2.3.2 TP3 KBAT Mengaplikasi
Solve the following problems.
(a) Atom natrium mempunyai 11 proton dan 12 neutron. Apakah nombor proton dan nombor nukleon bagi
atom natrium?
The sodium atom has 11 protons and 12 neutrons. What are the proton number and nucleon number of the sodium atom?
Nombor proton = bilangan proton = 8
Proton number = number of protons = 8
Nombor nukleon = bilangan neutron + bilangan proton
Number of nucleons = number of neutrons + number of protons
= 12 + 11
= 23

(b) Atom fluorin mempunyai nombor nukleon 19 dan 9 proton. Berapakah bilangan elektron dan neutron
bagi atom fluorin?
Fluorine atoms have nucleon numbers of 19 and 9 protons. What is the number of electrons and neutrons in a fluorine atom?
Nombor elektron = bilangan proton = 9
Number of electrons = number of protons = 9
Bilangan neutron = Nombor nukleon – bilangan proton
Number of neutrons = Nucleon number – number of protons
= 19 – 9
= 10

25 © Penerbitan Pelangi Sdn. Bhd.

02 Bab 2.indd 25 10/29/21 5:13 PM