Question

he question refer to elements of the periodic table with atomic number from 3to18 . in the table below, some elements are shown by letters , even though the letters are not the usual symbols of the elements
3 4 5 6 7 8 9 10
A B C D E F G H
11 12 13 14 15 16 17 18
I J K L M N O P
If A combines with F , would be the formula of the resulting compound?
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Answer 1

Answer:

Li2O

Explanation:

A will be Li

F will be O

When lithium combines with oxygen it forms lithium oxide

 i.e.  Li2O

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Answer 2

a) A noble gas-H,P

Noble gases are neon, Argon

b)A halogen-GO

Halogns are flourine, chlorine

c)An alkali metal-A,I

Alkali metals are lithium and sodium

d)An element with valency 4-D,L

Element with tetravalency are carbon and silicon.