Chemistry, asked by sjstyles098, 1 year ago

Elements A, B, C, D, E have atomic number 4,9,13,17,20 respectively . I) Write their electronic distribution. II)
Determine their valency. III) Classify them as metals and nonmetals .

Answers

Answered by Anonymous

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☆Element A has atomic no. 4
=》BERYLLIUM
i) Electric configuration = 1s2 2s2

ii) valency = 2

iii) Metal

☆Element B has atomic no. 9
=》Fluorine
i) Electric configuration = 1s2 2s2 2p6 3s1

ii) valency = 1

iii) Metal

☆Element C has atomic no. 13
=》Aluminium
i) Electronic configuration = 1s2 2s2 2p6 3s2 3p1
ii) valency = 3

iii) Metal

☆Element D has atomic no. 17
=》 CHLORINE
i) Electronic Configuration = 1s2 2s2 2p6 3s2 3p5
ii) valency = 1

iii) Non-metal

☆Element E has atomic no. 20
=》CALCIUM
i) Electronic Configuration = 1s2 2s2 2p6 3s2 3p6 4s2
ii) valency = 2

iii) Metal

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Answered by Anonymous

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ELEMENT A

Beryllium

•Electric configuration of Beryllium= 1s2 2s2

• Valency of Beryllium = 2

•Beryllium is a metal

ELEMENT B

Fluorine

• Electric configuration of fluorine = 1s2 2s2 2p6 3s1

• Valency of fluorine= 1

•Fluorine is a Metal

ELEMENT C

Aluminium

• Electronic configuration of aluminium= 1s2
2s2 2p6 3s2 3p1

• Valency of Aluminium= 3

• Aluminium is a Metal

ELEMENT D

Chlorine

•Electronic Configuration = 1s2 2s2 2p6 3s2 3p5

• valency = 1

•Chlorine is a Non-metal

ELEMENT E

Calcium

• Electronic Configuration of calcium= 1s2 2s2 2p6 3s2 3p6 4s2

•Valency of calcium = 2

•Calcium is a Metal

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Elements A, B, C, D, E have atomic number 4,9,13,17,20 respectively . I) Write their electronic distribution. II) Determine their valency. III) Classify them as metals and nonmetals .

Answers

Elements A, B, C, D, E have atomic number 4,9,13,17,20 respectively . I) Write their electronic distribution. II)
Determine their valency. III) Classify them as metals and nonmetals .