Question

24.
2
Given below are four elements with their atomic numbers:
Element
A
B
C
Atomic Number
16
11
3
14
D
i.
ii.
iii.
Identify the element which belong to same group of Modern Periodic Table.
Arrange the given elements in decreasing order of atomic size,
Write the formula of the oxide of 'B'.
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Answer 1

Answer:

1. A is Sulfur

B is Sodium

C is Lithium

D is Silicon

2. B and C belong to same group of the periodic table

3. Formula of oxide of B is Na2O.