Structure of Modern Periodic Table

Q.

How many metals are on the periodic table?

Q.

What are inert gases? Give examples.

Q. What are the anomalous properties of Be?

Q.

Explain why noble gases are unreactive while atoms of elements other than noble gases are chemically reactive.

Q. According to modern periodic table the elements from group 3 to group 12 are known as:

1. transition elements
2. halogens
3. alkali metals
4. alkaline earth metals

Q. Which of the following are alkaline earth metals?

1. Calcium
2. Magnesium
3. Strontium
4. Copper

Q. All the metalloids are found in the same group in the periodic table.

1. False
2. True

Q.

Noble gases are considered to be inert because they:

1. Chemically inactive
2. Does not react
3. All of the above.
4. Chemically stable

Q.

Which one of the following elements is a non-metal?

1. Mercury

2. Phosphorous

3. Copper

4. Sodium

Q.

Name the most abundant noble gas present in the air.

Q.

There are 7 columns and 18 rows in the periodic table.

1. True
2. False

Q. In the modern periodic table, the periods are represented by:

1. columns
2. individual elements
3. diagonal rows
4. horizontal rows

Q.

Which of the following statements are incorrect?

1. Noble gases occupy group 18.
2. Alkali metals occupy group 2.
3. Boron family occupy group 14.
4. Halogens occupy group 17.

Q. The first alkali metal is _______.

1. hydrogen
2. lithium
3. sodium
4. francium

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

1. Allotropes take the same place as the element.
2. Metals, non metals and metalloids are placed in an orderly manner.
3. Elements are placed in increasing order of atomic number.
4. Isotopes take the same place as the element.

Q. Elements in the ${16}^{th}$ group of the Modern Periodic Table are also called ____.

1. metals
2. halogens
3. chalcogens
4. conductors

Q.

Isotopes of chlorine (chlorine-35 and chlorine-37) have different atomic masses but are kept in different slots of the periodic table.

1. True

2. False

Q. Which of the following element had a controversial placement in modern periodic table?

1. Helium
2. Silicon
3. Hydrogen
4. Carbon

Q. In which block of the modern periodic table the metals, non-metals and metalloids are present all together?

1. p-block
2. d-block
3. f-block
4. s-block

Q. Choose the correct pair based on the state of the given metals at normal room temperature.

1. Mercury
2. Carbon
3. Helium
4. Solid
5. Gas
6. Liquid

Q. The term 'noble' in noble gases means chemically stable and unreactive.

1. False
2. True

Q.

Using the part of the periodic table given below, answer the following questions: [3 MARKS]
1. Na has physical properties similar to which elements and why?
2. Write the electronic configuration of N and P.
3. State one property common to fluorine and chlorine.

$$\begin{array}{ccccccccc}\text{Group}\text{Period}& \text{I}& \text{II}& \text{III}& \text{IV}& \text{V}& \text{VI}& \text{VII}& \text{Zero}\\ 1& \text{H}& & & & & & & \text{He}\\ 2& \text{Li}& \text{Be}& \text{B}& \text{C}& \text{N}& \text{O}& \text{F}& \text{Ne}\\ 3& \text{Na}& \text{Mg}& \text{Al}& \text{Si}& \text{P}& \text{S}& \text{Cl}& \text{Ar}\\ 4& \text{K}& \text{Ca}& & & & & & \end{array}$$

Q. All the elements in a group have:

1. same number of isotopes
2. same mass number
3. same number of shells
4. same number of valence electrons

Q.

Identify the odd term in each set. Name the category to which the remaining terms belong.

Sodium, Potassium, Calcium, Zinc

Q. Magnesium is related diagonally to:

1. Be
2. Ca
3. Li
4. Si

Q. How many elements are there in second group

Q.

What is the basis of classification of elements in the periodic table?

Q. Elements in the periodic table are classified into groups as they show similarities in properties with the elements of the respective groups. Identify the element which shows anomalous behavior so that it can be placed in two different groups of the periodic table.

1. Hydrogen (H)
2. Gold (Au)
3. Helium (He)
4. Carbon (C)

Q.

where in the periodic table do we find :

1. elements classified as nonmetals

2. elements forming negative ions

3. elements with high melting points

4. elements forming positive ions

Q.

Column-I

Column-II