JEE Main Chemistry question

Elements of the same vertical group of the Periodic Table have

(A)Same atomic number
(B)Same atomic size
(C)Same number of atoms
(D)Same number of electrons in outermost shellCorrect

Answer: (D)

Solution

Elements placed in the same group (vertical column) share the same valence-shell electron configuration pattern, i.e. the same number of electrons in their outermost shell, which is why they show similar chemical

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Question ID VK-133229