The question refers to the elements of the periodic table with atomic numbers from 3 to 18. In the table below, some of the elements are shown by letters, but letters are not the usual symbols of the elements.

Which of these is:
(ii) a halogen?

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Solution

Halogens are group 17 elements. They generally have seven electrons in their outermost shell. From the given elements, halogens are O and G. This is because, they have the atomic numbers 9 and 17 respectively and hence they have 7 electrons in their outermost shell.

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Similar questions

In the table below some of the element of the periodic table with atomic numbers from 3 to 18 are given. These are represented by letters which are not the usual symbols of the elements.
(A) Which of these:
(i) is a noble gas.
(ii) is a halogen.
(iii) is an alkali metal.
(iv) is an element with valency 4.
(B) If A combines with F then what would be the formula of the resulting compound?
(C) What is the electronic arrangement of G?

$\begin{matrix} 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 A & E & G 11 & 12 & 13 & 14 & 15 & 16 & 17 & 18 B & C & D & F \end{matrix}$

Q. The diagram below shows a part of the skelecton of the periodic table in which elements are indicated by letters which are not their usual symbols.
Which one of the following statement is correct?

Q. Question 44 (c)
Atomic number of a few elements are given below 10, 20, 7, 14. Identify the periods of these elements in the Periodic Table.

Q. In this ladder, symbols of elements are jumbled up. Rearrange these symbols of elements in the increasing order of their atomic number in the periodic table.

Q. Question 44 (b)
Atomic number of a few elements are given below 10, 20, 7, 14. Identify the group number of these elements in the Periodic Table

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The question refers to the elements of the periodic table with atomic numbers from 3 to 18. In the table below, some of the elements are shown by letters, but letters are not the usual symbols of the elements.​ Which of these is:​ (ii) a halogen?​

Halogens are group 17 elements. They generally have seven electrons in their outermost shell. ​ From the given elements, halogens are O and G. This is because, they have the atomic numbers 9 and 17 respectively and hence they have 7 electrons in their outermost shell.​

The question refers to the elements of the periodic table with atomic numbers from 3 to 18. In the table below, some of the elements are shown by letters, but letters are not the usual symbols of the elements.

Which of these is:
(ii) a halogen?

Halogens are group 17 elements. They generally have seven electrons in their outermost shell. From the given elements, halogens are O and G. This is because, they have the atomic numbers 9 and 17 respectively and hence they have 7 electrons in their outermost shell.