0
A potassium atom has 19 protons and 19 electrons, plus 20-22 neutrons.
A rubidium atom has 37 protons and 37 electrons, plus 46-50 neutrons and so is bigger.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is the formula for Rb and O?
Rb is rubidium, O is oxygen. They will combine to form Rb2O which is called rubidium oxide.
What does RB mean?
it means right back..
What does Rb mean in coin rating?
When grading copper cents, there are three main subgrades: BN (brown, a tarnished cent) RB (red-brown, a cent that has began to tarnish) and RD (red, an untarnished cent) out of all of these, collectors will sometimes pay a premium for RD or RB cents because they are much more attractive. However, keep in mind that most slabs aren't airtight and your RB or RD cent may very well eventually tarnish into a BN cent, so my advice is not to pay a premium for the colour designation but rather focus on the true grade of the coin (expressed in a number from 1 being barely recognizable to 70 being perfection)
Two trains going in opposite directions leave at the same time Train B travels 10 mph faster than train A In 3 hours the trains are 390 mph apart Find the speed of each?
Train A is going 60 miles per hour Train B is going 70 miles per hour Let rA = x, then rB = x + 10, and t = 3, then trA + trB = 390 3x + 3(x + 10) = 390 3x + 3x + 30 = 390 6x = 360 x = 60 x + 10 = 60 + 10 = 70
When you add a number that has a remainder of 1 when it is divided by 3 to a number that has a remainder of 2 when it is divided by 3 then what is the remainder of the sum when you divide it by 3?
The remainder is 0.If A has a remainder of 1 when divided by 3, then A = 3m + 1 for some integer mIf B has a remainder of 2 when divided by 3, then B = 3n + 1 for some integer n→ A + B = (3m + 1) + (3n + 2)= 3m + 3n + 1 + 2= 3m + 3n + 3= 3(m + n + 1)= 3k where k = m + n + 1 and is an integer→ A + B = 3k + 0→ remainder when A + B divided by 3 is 0-------------------------------------------------------------------------From this, you may be able to see that:if A when divided by C has remainder Ra; andif B when divided by C has remainder Rb; then(A + B) divided by C will have remainder equal to the remainder of (Ra + Rb) divided by C
What atomic radius is larger Rb or Sr?
Rb
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 the atomic radius of Rb?
Rubidium has an atomic radius of 248 picometers.
Which element has the largest radius Rb 37 or Xe 54?
Rubidium's atomic radius is greater than xenon's because the trend for atomic radius is that it decreases left to right across a period (even though atomic number increases, and generally speaking, atomic mass does as well.) This is a result of the attraction between the protons in the nucleus and the valence electrons, which are all in the same energy level for isoperiodic elements.
What elements have a smaller atomic radius than strontium?
Ca, Mg, Be, Fr, Cs, Rb, K, Na, Li, H
What is the atomic weight of Rb?
85.4678 is the atomic weight of Rb.
What group of elements have members of the smallest atomic radii for a given period?
Noble gases have the smallest atomic radius.
Which atom has larger atomic radius Rb or Xe?
Rb is larger with a radius of 248 pm while Xe has one of 130 pm. It follows the trend that radii decrease as you move right across the periodic table.
Smallest to largest atomic radius PotassiumMagnesiumCalciumRubidium?
mg, ca,k ,rb magnesium, calcium, potassium, rubidium as you do down a group atomic radius increases as you go across a period atomic radius decreases
Which has larger atomic size F or F ion?
Ionization energy increase across a period and decreases down a group, therefore the the element with the greater ionization energy would be found in the top right of the periodic table. In this instance fluorine, F would have the greater ionization energy.
Where is the lowest electronegativity barium calcium magnesium or strontium?
Both are ions and we should consider the ionic radius, not the atomic radius. Rubidium ion (Rb+) will have a larger IONIC radius than strontium ion (Sr2+). Both ions have the same electronic configuration. But strontium ion has more number of protons in the nucleus. Hence it will have greater force of attraction between the nucleus and the valence electrons, resulting in smaller size.
Which element is the largest K Rb Na Li?
Rb is the largest, Li the smallest in the row above. Group 1 of the periodic table: Fr > Cs > Rb > K > Na > Li > H
