.Which of the following represents the correct electronic configuration of VII A group elements in the ground state?
Correct answer: C. ns²p⁵
- A. ns²p²
- B. ns²p⁴
- C. ns²p⁵
- D. iodine
Explanation
Group VIIA (or Group 17) elements: These elements, also known as halogens, have seven valence electrons in their outermost shell.Electronic configuration: The general electronic configuration for elements in Group VIIA is ns²p⁵, where "n" represents the principal quantum number of the outermost shell.Breakdown of the configuration:ns²: This part indicates that there are two electrons in the s orbital of the outermost shell.p⁵: This part indicates that there are five electrons in the p orbital of the outermost shell.
Last updated
About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
Practise Transition Elements
531 free Transition Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A cobalt-amine has the formula Co(NH3)6Cl3. With AgNO3 solution, one third of the chloride is precipitated. The complex shows cis-trans isomerism. It can have the structure:
A complex compound of cobalt has a molecular formula containing five NH3 molecules, one nitro group and two chlorine atoms for one Co atom. One mole of this compound produces three moles of ions in an aqueous solution. On reacting with excess AgNO3 solution, two moles of AgCl get precipitated. The ionic formula of the compound is?
A compound having coordination number 6 has geometry:
A coordination complex compound of cobalt has a molecular formula containing five ammonia molecules, one nitro group, and two chlorine atoms for one cobalt atom. One mole of this compound produces three-mole ions in an aqueous solution. By the reaction of this solution with excess silver nitrate solution, two molecules of AgCl get precipitated. The ionic formula of this compound would be:
Acidified K₂Cr₂O₇ is also called: