A. 1s2 2s2 2p6 3s2 3p6 3d7
B. 1s2 2s2 2p6 3s2 3p6 4s2 4p5
C. 1s2 2s2 2p6 3s2 3p5 3d10
D. 1s2 2s2 2p6 3s2 3p6 4s23d5
Correct Answer: 1s2 2s2 2p6 3s2 3p6 4s23d5 ✔
Last Updated: December 20, 2022
Related MCQs
- Which of the following statement is correct ?
- The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________?
- Which of the following elements conduct electricity and also melts below 100°C ?
- Acid present in acid rain may be__________?
- The unit of the rate constant (k) is same as that of rate of reaction__________?
- Which of the following elements react with steam to produce H2 gas?
- Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________?
- A solution can be both__________?
- The unit of molality is__________?
- Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is__________?
- Which of the following points are important in connection with equilibrium constant ?
- Which of the following molecule is polar__________?
- Which of the following elements has greater 1st ionization energy__________?
- Which catalyst is used in contact process ?
- What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ?
- On heating aldehydes with Fehlings solution we get a precipitate whose colour is__________?
- Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?
- In solids the temperature is the measure of__________?
- All the transition elements show__________?
- Purines and pyrimidines are__________?
- Which of the following element doesnot show allotropy__________?
- Benzene is a good solvent for__________?
- If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at__________?
- When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?
- The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ?
- In the van der Waals equation (P + n2a / v2) (v – nb) = nRT which of the following statement is not true ?
- Regular coiling or zigzagging of polypeptide through hydrogen bonding is its__________?
- Which of the following is the formula of chrome red ?
- Across short period the melting and boiling point increase upto __________?
- Which of the elements do not fall in stair case of the modern periodic table__________?
- Which of following metals can be displaced by all other metals from its solution ?
- In which of the following type of reactions energy of reactant is greater than energy of product__________?
- At which electrode the reduction of the solution is occurring in Al-Ag cell__________?
- The use of antifreeze in the automobile radiator is an important application of__________?
- 1 mole of electron has mass in microgram__________?
- A solution has pH = 0 its H+ ion concentration is__________?
- Which of the following is not characteristics of reversible reaction__________?
- Which of the following theories is superior to others__________?
- The balanced chemical equation for the reaction which occurs when Be is added to water is__________?
- Which of the solid does not contain covalent bond__________?
- The hardest of the following solids is__________?
- Which of the following is mineral fiber ?
- Which statement is consistent with Hunds rule ?
- When methl iodide and ethyl iodide are treated with sodium metal possible major products are obtained ?
- When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is__________?
- Which of the following properties prove that cathode rays are material in nature__________?
- Paramagnetic behaviour of substance is measured by a balance called__________?
- Metallic crystals are soluble in__________?
- Butyl chloride gives possible isomers ?
- Which of the following solids show anisotropy__________?
- The rectified spirit is__________?