Which of the following pairs has elements containing the same number of electrons in the outermost orbit?

  • A
    $N$,$O$
  • B
    $Na$,$Ca$
  • C
    $As$,$Bi$
  • D
    $Pb$,$Sb$

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Similar Questions

Considering the elements $F,$ $Cl,$ $O,$ and $N,$ the correct order of their chemical reactivity in terms of oxidizing property is:
$(a)$ $F > Cl > O > N$
$(b)$ $F > O > Cl > N$
$(c)$ $Cl > F > O > N$
$(d)$ $O > F > N > Cl$

How does the chemical reactivity change as we move from left to right across a period in the periodic table?

Which of the following oxides is the most amphoteric?

Which of the following represents the correct order of acidic strength?

Which of the following orders is correct?

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