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Introduction

Argon has ato...

Question

Argon has atomic number 18 and belongs to third period and zero group. Predict the group and period for the elements having atomic 17 and 19 respectively.

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Solution

The solution is as follows:

1. Atomic number 17:

Period 3 Group 17

2. Atomic number 19:

Period 4 Group 1

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Similar questions

Q. An element belongs to group 17 it is present in third period and its atomic number is 17 What is the atomic number of the element belonging to same group and present in fifth period ?

Q. Two elements C and D belong to group 17 and 16 respectively. Whicha has smaller atomic size? Why?

Q. The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group?

Q. Element P has atomic number 19. To which group does P belongs to ?

The atomic numbers of three elements A, B and C are given below :

Element Atomic number

A 5

B 7

C 10

(i) Which element belongs to group 18? (ii) Which element belongs to group 15?

(iii) Which element belongs to group 13? (iv) To which, period/periods do these elements belong?

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