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Element having atomic no.of 56 belongs to which of the following block of periodic table
Options
(a) p-block
(b) d-block
(c) f-block
(d) s-block
Correct Answer:
s-block
Explanation:
Consider Barium having atomic number 56
It’s electronic configuration is 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶6s²
It contain 2 electrons in the valence shell, hence it is placed in 2 group of the periodic table that means s-block element.
Related Questions: - The effective atomic number for [Rh(H₂O)₆]³⁺ (atomic number for Rh is 45) is
- An orbital in which n = 4 and l = 2 is expressed by
- There is no S – S bond in
- 100 cm of a given sample of H₂O₂ gives 1000 cm³ of O₂ at STP. The given sample is
- Which of the following on addition of water in presence of acid gives a ketone
Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The effective atomic number for [Rh(H₂O)₆]³⁺ (atomic number for Rh is 45) is
- An orbital in which n = 4 and l = 2 is expressed by
- There is no S – S bond in
- 100 cm of a given sample of H₂O₂ gives 1000 cm³ of O₂ at STP. The given sample is
- Which of the following on addition of water in presence of acid gives a ketone
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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