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Standard VII

Mathematics

Identifying Perfect Square Numbers by Observing Their Last Digit

The position ...

Question

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.

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Solution

$A$ is a non metal.
Metals have a tendency to give away its valance electrons and form cations. Element A belongs to group 17 (Halogens). Group 17 elements have 7 electrons in theit valance shell thus they have the tendency to gain one electron and form anion thereby completing their octet.

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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?

Q. Option 6 (a)
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}

State whether A is a metal or non-metal.

Q. The positions 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 ?

Q. The position of three elements

A

B

and

C

in the Periodic Table are shown below –

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

b) State whether

C

is more reactive or less reactive than

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.

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Identifying Perfect Square Numbers by Observing Their Last Digit

Standard VII Mathematics

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

A is a non metal. Metals have a tendency to give away its valance electrons and form cations. Element A belongs to group 17 (Halogens). Group 17 elements have 7 electrons in theit valance shell thus they have the tendency to gain one electron and form anion thereby completing their octet.

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.

$A$ is a non metal.
Metals have a tendency to give away its valance electrons and form cations. Element A belongs to group 17 (Halogens). Group 17 elements have 7 electrons in theit valance shell thus they have the tendency to gain one electron and form anion thereby completing their octet.