Chemistry, asked by Anonymous, 4 months ago

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Answered by AestheticSoul

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

Group 1 Group 2 Group 17 Group 18

_____ _____ _____ D

_____ B C _____

A _____ _____ E

(a) State which are metals, nonmetals 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.

(a) Metals - A, B

Non - metals - C

Noble gas - D, E

(b) Most reactive metal - A

Most reactive non - metal - D

Type of ion formed by B - cation

Type of ion formed by C - anion

(d) Larger in size :-

______________________________

Elements which can lose valence electrons are metals.
Elements which gain valence electrons are non - metals.
Elements with complete valence shell, 0 zero valency are noble gases or inert gases.
As we move down the group, size of atoms of successive elements increases.
Metallic character increases as we move down the group.
Group 1 is also known as Alkali metals.
Group 2 is also known as Alkaline earth metals.
Group 17 is also known as Halogens.
Group 18 is also known as noble gases.
Group 1 has 1 valence electron. So, their valency is 1.
Group 2 has 2 valence electrons. So, their valency is 2.
Group 17 has 7 valence electrons. So, their valency is 1.
Group 18 has 8 valence electrons, i.e. their outermost shell is complete. So, their valency is 0.

Answered by Anonymous

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(a) Metals - A, B

Non - metals - C

Noble gas - D, E

(b) Most reactive metal - A

Most reactive non - metal - D

Type of ion formed by B - cation

Type of ion formed by C - anion

(d) Larger in size :-

E will be larger in size.

B will be larger in size.

______________________________

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