Groups

Q.

What is the electron configuration of palladium?

Q.

Why do elements in the same group have similar physical and chemical properties?

Q.

Describe the main features of Mendeleevs periodic table?

Q.

What is the electron configuration of Platinum?

Q.

What is the electron configuration of Potassium?

Q.

Descriibe Lanthanides and Actinides.

Q.

The characteristics of elements X, Y, and Z with atomic numbers, respectively $33$, $53$ and $83$ are

1. X and Z are non-metals and Y is a metalloid

2. X and Y are metalloids and Z is a metal.

3. X, Y and Z are metals.

4. X is a metalloid, Y is a non-metal and Z is a metal

Q.

What do you call the element from atomic number 57 -71?

Q.

The first member of each group of representative elements (i.e., s and p - block elements) shows anomalous behaviour. Illustrate with two examples.

Q.

The group 16 elements are also known as______.

Q.

Write four characteristic properties of P- block elements.

Q.

Do lanthanides have a group number?

Q.

Show the formation of aluminium ion.( Atomic number of aluminium = 13).

Q.

Which of the following statement (s) about the Modern Periodic Table are incorrect

(i) The elements in the Modern Periodic Table are arranged based on their decreasing atomic number.

(ii) The elements in the Modern Periodic Table are arranged based on their increasing atomic masses.

(iii) Isotopes are placed in an adjoining group (s) in the Periodic Table.

(iv) The elements in the Modern Periodic Table are arranged based on their increasing atomic number.

1. (i) only

2. (i), (ii) and (iii)

3. (i), (ii) and (iv)

4. (iv) only

Q.

Regular use of which of the following fertilizers increases the acidic strength of soil?

1. Potassium nitrate

2. Urea

3. Superphosphate of lime

4. Ammonium sulphate

Q.

What is the electron configuration of fluorine?

Q. An element 'X' with Z = 112 has been recently discovered. To which group and period will it belong?

1. 11, 5
2. 12, 7
3. 7, 12
4. 5, 11

Q. Which of the following is true about the element of atomic no. 33?

1. It is p-block element
2. It is the $5^{th}$ period element
3. It belongs to ${16}^{th}$ group
4. It is the member of VI A group

Q.

How many rows and columns are there in a periodic table?

Q. What are horizontal rows and vertical columns in a periodic table known as?

Q. Why is the maximum covalency of Oxygen only 2?

Q.

What is meant by ionization energy?

Q.

If an atom has electronic configuration $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^2$ it will be placed in?

1. Second group

2. Third group

3. Fifth group

4. Sixth group

Q.

What is the modern periodic table?

Q. For the first row transition metals the \(\rm~E^\ominus\) values are:

\(\rm~\begin{matrix}
\rm~E^\ominus & \rm~V & \rm~Cr & \rm~Mn & \rm~Fe & \rm~Co & \rm~Ni & \rm~Cu \\
(\rm~M^{2+}/M) & -1.18 & -0.91 & -1.18 & -0.44 & -0.28 & -0.25 & +0.34
\end{matrix}\)

Explain the irregularity in the above values.

Q. Which of the following pairs of elements are from the same group of the periodic table

1. Mg, Sr
2. Mg, Cs
3. Mg, Cl
4. Na, Cl

Q. Pd has exceptional valence shell electronic cofiguration of $4d^{10}5s^0$ It is a member of -

1. $4^{th}$ period, Group 12
2. $5^{th}$ period, Group 10
3. $6^{th}$ period, Group 10
4. $5^{th}$ Period, Group 14

Q. What type of bond do the transition elements form with themselves?

1. Ionic bond
2. Covalent bond
3. Coordinate bond
4. Metallic bond

Q.

Element With An Atomic Number 23 Will Be Placed In The Periodic Table In Which Group?

Q.

Complete the following statements

A magnesium atom changes to a magnesium ion by losing