Question

Q 18.Read the following passage and answer the questions from 18 A to 18 E.

The modern periodic table Has 18 vertical columns known as groups and 7 horizontal rows known as periods. The number of elements in a period is fixed by the maximum number of elements which can be accommodated in the different shell of an Atom. The elements in a group do not have consecutive atomic numbers. All the elements in a group have same number of Valence Electrons

and show similar properties.

Given alongside is a part of the Modern Periodic Table of 1 and 2 groups.

Li

Na

K

RE

Cs Fr

Be

Ra

A) Which among the following has larger size of atoms? a) Li b) Na c) Cs d) Fr

B) Which one of the following does not increase while moving down in a group of the periodic table?

a) Atomic number b) Metallic character c) Valency d) Number of shell in an element

C) The two properties of elements whose magnitude increase while going from tap to bottom

in a group of the periodic table.

a) Atomic size and electronegativity b) Atomic size and electropositivity

c) Valency and basic nature of metal oxides d) Valency and electropositivity.

Đ) A student writes a few statements after studying the modern periodic table. 1) The size of Be is larger than the size of atom

The size of Li atom is larger than the size of Be atom III) The size of Na atom is larger than the size of u atom m

Iv) the correct order of atomic size of element is: Li <Be Nack

Choose the correct statements from the following:

a) Only b) Both I and Ii c) Il and ill d) , m, and IV

E) What will be the formula of chloride of Beryllium. a) Bect b) Be2 c) Be2CI d) Be2C13

For question number 19and 20 two statements are given one labeled Assertion (A) and other labelled Read on (R) Select the correct answer to these questions from the code ().(i#),(H) and IV as

given below

1) A and Rare true and R is correct reason of A. 11) A and R are true but This not correct reason of A.

A is true but R is false. IV) Both A and Rare false.​

Answer 1

Answer:

The size of Li atom is larger than the size of Be atom