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The Periodic Table — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYThe Periodic Table3 Marks
Question
Complete the table:

Atomic number

Element

Electronic configuration

Select an element of the same group

11

Sodium

(Ca/N/K)…

15

Phosphorus

(Ba/N/Rb)…

16

Sulphur

(F/Cl/O)…

9

Fluorine

(Ca/Cl/K)…
✓

Answer

Atomic number

Element

Electronic configuration

Select an element of the same group

11

Sodium

2, 8, 1

K

15

Phosphorus

2, 8, 5

N

16

Sulphur

2, 8, 6

O

9

Fluorine

2, 7

Cl

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