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Why does the d block have only 10 elements?

The d block has only 10 elements because the d sublevel can hold a maximum of 10 electrons due to its 5 orbitals, each with a paired electron. This results in a maximum of 5 d orbitals accommodating a total of 10 electrons in the d block elements.


What is Dubnuim?

Dubnium is an element with atomic number 105. marked as Db. Atomic weight (of stable isotop)-268g D-Block Element-Period 7 & group 5. Properties similar to that of other members in group 5. Dubnium is not present in nature but belongs to those elements prepared synthetically in labs. First observed in Russia.


Why should a building structure be stable?

Some ways you can make a structure more stable is by: 1) Making the Base wider 2) Taper The Structure (Make the top skinny and the Base Wide) 3) Make the Base Heavier 4) Lower the Centre Of Gravity 5) Add more Support Points


How much does a block of granite way that is 5 feet long by 2 foot wide by 8 inches thick?

To calculate the weight of a block of granite, first convert the dimensions to cubic feet: 5 feet long × 2 feet wide × (8 inches ÷ 12 inches/foot) = 5 × 2 × (2/3) = 6.67 cubic feet. Granite typically weighs around 170 pounds per cubic foot. Therefore, the weight of the block would be approximately 6.67 cubic feet × 170 pounds/cubic foot = 1,134 pounds.


Does a 5 kg chunk of aluminum and a 5 kg block of silver that are at the same temperature have the same thermal energy?

No, the thermal energy of the aluminum and silver blocks would not be the same even if they are at the same temperature. This is because different materials have different specific heat capacities, meaning they require different amounts of energy to raise their temperature by the same amount.