WorksheetsSK015 Chapter 3 Periodic Table
Total questions: 10
Worksheet time: 5mins
Which of the following statements is true of the periodic table?
A. It is based on nucleon number.
B. The elements are divided into five blocks.
C. There are eight groups in the periodic table.
D. There are seven periods in the periodic table.
The proton numbers of chlorine, potassium and calcium are given below.
CI = 17, K = 19, & Ca = 20
Thus, we can conclude that the ionic radii of CI-, K+ and Ca2+ ions increase in the order of
A. CI- < K+ < Ca2+
B. Ca2+< K+ < CI-
C. K+ < Ca2+< CI-
D. K+ < CI- < Ca2+
The following pairs of elements are in Period 3 of the periodic table. Which of these pairs has the greatest difference in boiling points?
A. Silicon and aluminium
B. Sodium and aluminium
C. Silicon and phosphorus
D. Aluminium and phosphorus
In which of the following pairs does the first species have a larger size?
A. N, P
B. P3-, P
C. Mg, Na
D. Mg2+, Mg
Which of the following elements has the highest second ionisation energy?
A. Iron
B. Silicon
C. Magnesium
D. Sodium
The successive ionisation energies of an element are given below.
760 (first). 1540, 3300, 4399, 8950, and 119000 kj mol-1
A. Is a d-block element.
B. Is a p-block element.
C. Is a s-block element.
D. Has half-filled p orbitals.
On moving across Period 3 (from sodium to chlorine)
A. The oxides of the elements become more acidic
B. The electronegativity of the elements decreases
C. The first ionisation energy of the elements decreases
D. The strength of the elements as an oxidising agent decreases
Which of the following statements is true about fluorine?
A. Energy is absorbed when fluorine atoms gain electrons to form fluoride ions.
B. Fluorine is less electronegative than chlorine.
C. The first ionisation energy of fluorine is higher than oxygen.
D. The atomic radius of fluorine is larger than that chlorine.
The electronic configuration of the four elements are shown below:
R: 1s2 2s2 2p6 3s1
X: 1s2 2s2 2p6 3s2 3p6
Y: 1s2 2s2 2p6 3s2 3p4
Z: 1s2 2s2 2p6 3s2 3p6 4s2
Which of the elements form basic oxide?
A. Element R and Y
B. Element R and Z
C. Element X and Y
D. Element Y and Z
The electronic configuration of element Q is shown below:
1s2 2s2 2p6 3s2 3p6 4s2
Which of the following statements is of Q?
A. It is located in Period 4.
B. It is Group II element.
C. It has a low melting point.
D. It is a poor electrical conductor.
