Chemistry
Grade-9
Easy
Question
Which elements have the most similar chemical properties?
- K and Na
- K and Ca
- K and Cl
- K and S
Hint:
In a group elements have similar chemical properties.
The correct answer is: K and Na
- In Mendeleev's periodic table there are 118 elements arranged in 18 groups and 7 periods.
- As we move down the group chemical properties are similar.
- Na and K are in same group and has similar chemical properties.
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