What is the proton (atomic number) of an element that has four unpaired electrons in its ground state?
Correct answer: D. 26
- A. 6
- B. 14
- C. 22
- D. 26
Explanation
The number of unpaired electrons in an element's ground state corresponds to the element's atomic number, which is the number of protons in its nucleus. In this case, an element with four unpaired electrons would have an atomic number of 26. Iron has an atomic number of 26; it has four unpaired electrons in its ground state electronic configuration:1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d⁶
Last updated
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: