0
What else can I help you with?
Is iron softer than potassium?
No, iron is harder than potassium. Iron is a metal with a higher Mohs hardness rating than potassium, which is a soft alkali metal.
What element is harder than gold but softer than copper?
Silver is harder than gold but softer than copper.
Which has the smallest radius K Rb K Rb?
Potassium's atomic radius is smaller than rubidium's because potassium has fewer energy levels of electrons.
Is rubidium a transition element?
NO!!!! It is a Group '1' metal, and reacts similarly , but more violently than sodium or potassium.
Is coal harder or softer than rock?
Coal is generally softer than most rocks. It has a lower hardness level compared to most types of rocks.
Is iron softer than potassium?
No, iron is harder than potassium. Iron is a metal with a higher Mohs hardness rating than potassium, which is a soft alkali metal.
Does rubidium have a higher melting point than potassium?
Yes, rubidium has a higher melting point than potassium. Rubidium has a melting point of 39.3°C, while potassium has a melting point of 63.4°C.
What element is harder than gold but softer than copper?
Silver is harder than gold but softer than copper.
Is a No. 1 pencil harder or softer than a No. 2 pencil?
It's softer. #1 softest, #2 slightly harder, #3 harder than #2, etc.Softer.a #1 pencil is softer than a#2 pencil
Which has the smallest radius K Rb K Rb?
Potassium's atomic radius is smaller than rubidium's because potassium has fewer energy levels of electrons.
What is a form of calcium carbonate softer than marble but harder than chalk?
Limestone is a form of calcium carbonate that is softer than marble but harder than chalk. It is commonly used in construction materials and can be found in different shades depending on the mineral impurities present.
Why is the lattice energy of potassium bromide more exothermic than the lattice energy of rubidium iodide?
The lattice energy of potassium bromide is more exothermic than that of rubidium iodide because potassium and bromine have smaller atomic sizes and higher charges, which leads to stronger ionic bonding in potassium bromide. Rubidium and iodine have larger atomic sizes and lower charges, resulting in weaker ionic bonding in rubidium iodide. The stronger ionic bonding in potassium bromide requires more energy to break, resulting in a more exothermic lattice energy.
Is potassium more reactive than rubidium?
Yes, potassium is more reactive than rubidium. This is because potassium has a lower atomic number and smaller atomic radius compared to rubidium, making it easier for potassium to lose an electron and form a positive ion. This increased reactivity is also evident in the reactivity series, where potassium is placed above rubidium.
Why sodium is more reactive than potassium?
The atomic radius of potassium is greater than that of sodium. Therefore, the single valence electron that exists for all alkali metals is located farther from the nucleus for potassium than sodium. This results in less energy required to remove that valence electron from potassium than from sodium, leading to increased reactivity. Note that this trend continues as you move down Group I on the Periodic Table, meaning that Rubidium is more reactive than Potassium and Cesium is more reactive than Rubidium.
What is softer then enamel but harder than cementum?
Dentin is a tissue that is softer than enamel but harder than cementum. It makes up the majority of a tooth's structure and provides support and protection to the inner pulp tissue.
Contains oygen and carbon softer than fluorit but harder than gypsum?
limestone
Would brass softer than the pure metals?
Alloys are harder than the components.
