Groups

Q. Electronic configuration of Pd (Z=46) is (1) (Kr) 4d^85s^2 (2) (Kr) 4d^9 5s^1 (3) (Kr) 4d^{10}5s^0 (4) 4d^75s^1

Q.

The correct order of electron affinity of B, C, N, O is

1. O>C>N>B

2. B>N>C>O

3. O>C>B>N

4. O>b>C>N

Q. 18. Which is most ionic compound of group-14 elements? 1)CCl4 2)SiCl4 3)PbCl2 4)PbCl4

Q. 14. Electronic configuration of k+ cl

Q. Which of the following does not have a pseudo noble gas configuration?

1. $Z{n}^{2+}$
2. $S{n}^{4+}$
3. $A{l}^{3+}$
4. $I{n}^{3+}$

Q. 48. identify the group and period of an element having atomic number 117.if group number is x and period is y and x+y=24

Q. The group of the periodic table which contains elements in gaseous, liquid and solid state at room temperature is

1. 1
2. 13
3. 15
4. 17

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

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

Q. WHAT IS THE BASIC DIFFERENCES IN APPROACH BETWEEN THE MENDELEEVS PERIODIC LAW AND THE MODERN PERIODIC LAW?

Q.

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

Q. Which group elements of the modern periodic table were placed along with alkali metals in Mendeleeff table?

1. I B
2. II B
3. II A
4. I A

Q. Elements A, B, C, D and E have the following electronic configurations.
A : $1s^{2}2s^{2}2p^1$
B : $1s^{2}2s^{2}2p^{6}3s^{2}3p^1$
C : $1s^{2}2s^{2}2p^{6}3s^{2}3p^3$
D : $1s^{2}2s^{2}2p^{6}3s^{2}3p^5$
E : $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^2$
Which among these will belong to the same group in the periodic table.

1. B and C
2. C and E
3. D and E
4. A and B

Q.

How many groups and periods are there in the modern periodic table?

1. 18, 8

2. 8, 18

3. 18, 7

4. 7, 18

Q. how to prrdict the S and R in more than one chiral carbon compounds?how to predict the priority given in numbering of attachedmolecule presented in thes more than one chiral compound

Q. The number of groups and periods in the modern periodic table are and .

1. 18
2. 17
3. 14
4. 8
5. 7
6. 5

Q. which of the following electronic configuration is incorrect (explanation: 2p^3 2d^5 4s^1 5f^8

Q. An Element With Electronic Configuration 1s^2 2s^2 2p^6 3s^2 is a/an is

Q.

All the elements in the group have

1. Same number of shells

2. None of these

3. Same no of valance electrons

4. Same mass number

Q. The number of elements that do not have completely filled d subshell among elements in between $Ni,Pd,Pt,Cu,Ag,Au,Zn,Cd,Hg$

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

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

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

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

Q. Give the group number of following elements present in periodic table

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. 18. Trend ofBasicity order of gp 1and gp 2elements oxide and the reason