The Modern Periodic Table
The Modern Periodic Table: Overview
In this topic, we shall study the modern periodic table in detail along with the position of elements in modern periodic table. We will also study about valencies and atomic size in detail.
Important Questions on The Modern Periodic Table
The atomic numbers of two elements are and respectively. Do you keep these two elements in the same period of the modern periodic table? Justify your answer. Which one of these two elements is more electropositive? Why?
The atomic numbers of three elements and are given below:
| Element | Atomic number |
Which element belongs to group ?
The position of certain elements in the Modem Periodic Table are shown below.
| G | H | ||||||||
| A | I | B | C | ||||||
| D | E | F |
Which of the following element has the largest atomic size?
The position of certain elements in the Modem Periodic Table are shown below.
| G | H | ||||||||
| A | I | B | C | ||||||
| D | E | F |
Which element is a metal with valency ?
The position of certain elements in the Modem Periodic Table are shown below.
| G | H | ||||||||
| A | I | B | C | ||||||
| D | E | F |
Which element is a non-metal with valency ?
The position of certain elements in the Modem Periodic Table are shown below.
| G | H | ||||||||
| A | I | B | C | ||||||
| D | E | F |
Which element will form only covalent compounds?
The positions of elements X, Y, Z in the Periodic Table are given below.
| Group 16 | Group 17 |
| - | X |
| - | - |
| Y | Z |
What name is given to group 17 elements?
What is the basis of arranging the elements in the modern periodic table?
The positions of three elements in the Periodic table are given below.
| Group 16 | Group 17 |
| - | X |
| - | - |
| Y | Z |
State whether element X is a metal or nonmetal?
The question is concerned with the elements in period 5, Rb to Xe.
The electron distribution of some of these elements are given in the following list.
Element A 2 + 8 + 18 + 8 + 2
Element B 2 + 8 + 18 + 18 + 8
Element C 2 + 8 + 18 + 18 + 5
Element D 2 + 8 + 18 + 18 + 6
Element E 2 + 8 + 18 +18 + 4
Element F 2 + 8 + 18 +18 + 7
Predict two differences in physical properties between rubidium and transitional metal niobium.
State the modern periodic law.
Write two elements for the following:
Noble gases
Write two elements for the following:
Halogens
Write two elements for the following:
Alkali earth metals
Write two elements for the following:
Alkali metals
What are metalloids?
The family of elements having seven electrons in the outermost shell is:
An element has configuration . It belongs to,
Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. Use an Internet search to find a picture of the periodic table depicted as a spiral. Is this a good depiction of the information?
Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. Are there other ways in which the information could be presented?
