The position of three elements $A$ , $B$ and $C$ in the Periodic Table are shown below –

Group 16 Group 17

- -

- A

- -

B C

d) Which type of ion, cation or anion, will be formed by element $A$ ?

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Solution

$A$ forms an anion.
A belongs to group 17 in the periodic table. Thus it is a halogen. Halogens have 7 electrons in their valance shell. They have a tendency to gain one elecyton to complete their octet. Thus A have the valency of -1 and forms an anion.

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Similar questions

Q. The position of three elements A, B and C in the Periodic Table are shown below-

Group $16$	Group $17$
-	-
-	A
-	-
B	C

(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?

The position of elements A,B,C,D and E in the periodic table are shown below:

$\begin{matrix} G r o u p 1 & G r o u p 2 & G r o u p 17 & G r o u p 18 - & - & - & D - & B & C & - A & - & - & E \end{matrix}$

(a) State which are metals, non-metals and noble gas in this table.

(b) State which is the most reactive (i) metal (ii) non-metal

(d) Which is larger in size (i) D or E (ii) B or C.

Question 6 (d)
The position of three elements A, B and C in the periodic table are shown below –
$\begin{matrix} Group 16 & Group 17 - & - - & A - & - B & C \end{matrix}$

Which type of ion, cation or anion, will be formed by element A?

Q. The position of three elements A, B, and C in the periodic table are shown below:

\begin{matrix} G r o u p - 16 & G r o u p - 17 - & - - & A - & - B & C \end{matrix}

(a) State whether A is a metal or non-metals .
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size then B?
(d) Which type of ion, cation or anion will be formed by element A?
(e) Give two examples of group 17.

The position of three elements A,B and C in the periodic table are shown below: [5 MARKS]

(a) State whether A is a metal or non-metals.

(b) Will C be larger or smaller in size than B?
(C) State whether C is more reactive or less reactive than A.
(d) Which type of ion, cation, or anion will be formed by element A?
(e) Give two examples of group 17.

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The position of three elements A, B and C in the Periodic Table are shown below – Group 16 Group 17 - - - A - - B C d) Which type of ion, cation or anion, will be formed by element A?

A forms an anion. A belongs to group 17 in the periodic table. Thus it is a halogen. Halogens have 7 electrons in their valance shell. They have a tendency to gain one elecyton to complete their octet. Thus A have the valency of -1 and forms an anion.

The position of three elements $A$ , $B$ and $C$ in the Periodic Table are shown below –

Group 16 Group 17

- -

- A

- -

B C

d) Which type of ion, cation or anion, will be formed by element $A$ ?

$A$ forms an anion.
A belongs to group 17 in the periodic table. Thus it is a halogen. Halogens have 7 electrons in their valance shell. They have a tendency to gain one elecyton to complete their octet. Thus A have the valency of -1 and forms an anion.