Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic Table.
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic Table.
- A
The elements become less metallic in nature.
- B
The number of valence electrons increases.
- C
The atoms lose their electrons more easily.
- D
The oxides become more acidic.
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Nitrogen (atomic number $7$) and phosphorus (atomic number $15$) belong to group $15$ of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
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Did Dobereiner’s triads also exist in the columns of Newlands’ Octaves ? Compare and find out.
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What property do all elements in the same column of the Periodic Table as fluorine have in common?
What property do all elements in the same column of the Periodic Table as fluorine have in common?
Name
$(a)$ three elements that have a single electron in their outermost shells.
$(b)$ two elements that have two electrons in their outermost shells.
$(c)$ three elements with filled outermost shells.
Name
$(a)$ three elements that have a single electron in their outermost shells.
$(b)$ two elements that have two electrons in their outermost shells.
$(c)$ three elements with filled outermost shells.