Periodic Classification Of Elements

Periodic Classification Of Elements

Multiple Choice

Element X forms a chloride with the formula XCl 2 , which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as

• (a) Na

• (b) Mg

• C) Al

• D) Si

Multiple Choice

Four elements A, B, C, D are given With their electronic configuration.

A(2, 1) B(2, 8) C(2, 8,1) D(2, 8,8)

A) Which of the 2 elements belong to the same period

• A(2, 1) B(2, 8)

• B(2, 8) C(2, 8,1)

• C(2, 8,1) D(2, 8,8)

• A(2, 1) D(2, 8,8)

Multiple Choice

Four elements A, B, C, D are given With their electronic configuration.

A(2, 1) B(2, 8) C(2, 8,1) D(2, 8,8)

Which of the 2 elements belong to the samegroup.

• A(2, 1) B(2, 8)

• B(2, 8) C(2, 8,1)

• C(2, 8,1) D(2, 8,8)

• A(2, 1) C(2, 8,1)

Multiple Choice

Non metals are situated on the _____________ side of the periodic table.

• left

• right

• centre

Multiple Choice

Halogens belong to __________ group of periodic table

• 12

• 13

• 17

• 18

Multiple Choice

EKABORON , EKA ALUMINIUM AND EKA SILICON REPRESENT WHICH OF THE FOLLOWING SETS OF ELEMENTS?

• SCANDIUM,GALLIUM,GERMANIUM

• GERMANIUM, SCANDIUM,GALLIUM,

• GALLIUM,SCANDIUM ,GERMANIUM

• GALLIUM,GERMANIUM, SCANDIUM

Multiple Choice

Upto which element, the Law of Octaves was found applicable?

• CALCIUM

• MAGNESIUM

• ALUMINIUM

• POTASSIUM

Multiple Choice

In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?

• (a) Chlorine

• (b) Silicon

• (c) Oxygen

• (d) Germanium

Multiple Choice

An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.

• (a) Valency = 6

• (b) Valency = 2

• (c) Valency = 1

• (d) Valency = 3

Multiple Choice

The elements A, B and C belong to groups 1, 14 and 17 respectively of the Periodic Table. Which two elements will form ionic compounds?

• (a) A and B

• (b) A and C

• (c) B and C

• (d) None

Multiple Choice

Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?

• (a) Group 8

• (b) Group 2

• (c) Group 18

• (d) Group 10

Multiple Choice

The arrangement of elements in the Modem Periodic Table is based on their

• (a) increasing atomic mass in the period

• (b) increasing atomic number in the horizontal rows

• (c) increasing atomic number in the vertical columns

• (d) increasing atomic mass in the group

Multiple Choice

An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong?

• (a) 4th group

• (b) 6th group

• (c) 3rd group

• (d) 2nd group

Multiple Choice

The properties of eka-aluminium predicted by Mendeleev are the same as the properties of later discovered element

• (a) Scandium

• (b) Germanium

• (c) Gallium

• (d) Aluminium

Multiple Choice

At the time of Mendeleev, the number of elements known was

• (a) 63

• (b) 65

• (c) 62

• (d) 64