Structure of the Modern Periodic Table

Q.

States even characteristics of long form of periodic table.

Q.

Which kind of elements have tendency to lose electrons? Give example.

Q.

Why does the periodic table stop 118?

Q. Which of the following are true for modern periodic table?

(More than one option is correct)

1. Isobars occupy a single place in the modern periodic table.
2. Metals are placed on the left side and non-metals are placed on the right side of the modern periodic table.
3. Elements are placed in increasing order of atomic number.
4. Isotopes occupy a single place in the modern periodic table.

Q. The element that occupies the 2nd period and the 16th group in the modern periodic table is .

1. nitrogen
2. silicon
3. fluorine
4. oxygen

Q.

According to modern periodic table, the serial number of an element in a period table is also its _____________.

Q.

Differentiate between the following.

Atomicity and Valency

Q.

The periodic table consists of eighteen groups and seven rows.

1. True
2. False

Q.

Discuss three demerits of the modern periodic table.

Q.

Fifth period of the modern periodic table has 18 elements.

1. True
2. False

Q. Which of the following pairs have dissimilar chemical properties?

1. Sodium ($\text{Na}$) and potassium ($\text{K}$)
2. Barium ($\text{Ba}$) and strontium ($\text{Sr}$)
3. Zirconium ($\text{Zr}$) and hafnium ($\text{Hf}$)
4. Calcium ($\text{Ca}$) and copper($\text{Cu}$)

Q.

What is the main characteristic of the last element in each period of the periodic table?

What is the name of such elements?

Q. Which of the following are true for modern periodic table?

(More than one option is correct)

1. Isobars occupy a single place in the modern periodic table.
2. Metals are placed on the left side and non-metals are placed on the right side of the modern periodic table.
3. Elements are placed in increasing order of atomic number.
4. Isotopes occupy a single place in the modern periodic table.

Q. Match the group with the valencies of the elements present in them.

1. 2
2. 1
3. 3
4. 0

Q.

Noble gases are considered to be inert. Identify pairs of noble gases from the options:

(More than one option are correct)

1. Helium and hydrogen

2. Neon and argon

3. Helium and neon

4. Nitrogen and neon

Q.

With reference to long form of the periodic table fill in the blank spaces with appropriate words.

The second and the third periods have _______ elements are called _________ periods.

Q.

With reference to long form of the periodic table fill in the blank spaces with appropriate words.

Noble _____ are placed in ______ group in last ______ of the periodic table.

Q. belongs to group 18 and has valence electrons.

1. Neon
2. 7
3. Fluorine
4. 8

Q. The total number of filled orbits of an atom determines the period number of the element.

1. False
2. True

Q.

With reference to long form of the periodic table fill in the blank spaces with appropriate words.

________ are the elements from At. no. 57 to _________ and are placed _______ the periodic table.

Q. Elements of a group have similar chemical properties.

1. True
2. False

Q. The number of groups in the modern periodic table is:

1. 7
2. 8
3. 16
4. 18

Q. All the elements in a particular group have the same ________.

1. mass number
2. number of shells
3. number of valence electrons
4. ionisation energy