Class
Candidate Name
Sec 2 Ihsan
Index
Date
7.1.2016
MADRASAH AL-ARABIAH AL-ISLAMIAH
MATHEMATICS & SCIENCE DEPARTMENT 2016
SCIENCE UNIT
Chapter 11: The Periodic Table.
Practice
1. With regards to the standard Periodic Table of Elements answer the following questions.
(a)
The first element in the Periodic Table.
(b) What group is known as the noble gases?
(c)
What group does the elements have only one outer shell electron?
(d) What group that contains elements as solid, liquid and gas states?
(e) What group contains metalloids?
(f)
What is the last group of elements in the periodic table.
(g)
What group contains all metals that have multiple charges?
2. Study the following list of elements
magnesium
carbon
argon
caesium
chlorine
hydrogen
sodium
aluminium
tin
beryllium
From this list, write down the elements
(a) are metals
__________________________________________
(b) are in period 3
__________________________________________
(c) are in group I
__________________________________________
(d) have atoms with two outer electrons
__________________________________________
(e) have oxides with the formula XO2.
__________________________________________
3. The table below shows the elctronic configuration of five elements, A to E. The letters are not real
symbol of the elements.
Element
A
B
C
D
E
Electronic configuration
2.2
2.7
2.8
2.8.3
2.8.8.2
From the information in given table, give the letters of
(a) two elements which are metals
Mahathir16
_______________________________________
Page |1
(b) one element which is a noble gas
_______________________________________
(c) two elements in the same group
_______________________________________
(d) two elements in the same period
_______________________________________
4. An element X in Period 3 of the Periodic Table has 6 outer shell electrons.
(a) In which group it belongs to. Explain your answer.
(b) What is the name and symbol of X?
(c) How many electron shells are there in an atom of X?
(d) Is the element a metal or non-metal?
(e) What will be the charge and chemical symbol of its ion?
5. Strontium (Symbol Sr) is below calcium in Group II of the Periodic Table. Its is found as a ore
called strontianite. The ore is similar to limestone, an ore to calcium.
(a) Give the chemical name and formula of the compound in strontianite.
(b) For the metal strontium, how many electrons does it have in its outermost shell? Give a reason.
(c) Write down the formula of the compound strontium nitrate.
Mahathir16
Page |2