- What is the rarest element on earth?
- What is the heaviest element in the human body?
- Which is larger k or k+?
- Which is smaller in size Cl or Ar?
- Which is larger Ca or ca2+?
- Which is larger Cl or Ar?
- Why is K+ larger than ca2+?
- Which atoms have the largest radius?
- Which of the following atoms is larger than iodine?
- Which is the smallest atom?
- Why is an atom of K+ smaller than an atom of K?
- Which atom has the highest ionization energy?
- Why is gallium smaller than Aluminium?
- What is the heaviest element known to man?
- Is K or Br atom bigger?
- What is the biggest element?
- Is H bigger than F?
What is the rarest element on earth?
AstatineAstatine is a radioactive chemical element with the symbol At and atomic number 85.
It is the rarest naturally occurring element in the Earth’s crust, occurring only as the decay product of various heavier elements..
What is the heaviest element in the human body?
IodineIodine is the heaviest element required by the human body.
Which is larger k or k+?
The size of the potassium ion depends on the location of the single electron, present on fourth energy level which is the highest, from the nucleus. The K+ ion has its outermost electrons on the third energy level now and is size is smaller than that of K ion. Hence, K is larger than K+.
Which is smaller in size Cl or Ar?
Chlorine is smaller than Argon.
Which is larger Ca or ca2+?
Ca atom will be larger than Ca2+ because cations are smaller than their parent atom. The Ca2+ cation is larger than the Mg2+ cation since the calcium cation has one more complete level than the magnesium cation.
Which is larger Cl or Ar?
Cl- has the same number of electrons as Ar, but it has less protons, so less of a positive charge pulling those electrons to the nucleus, so will has a larger radius.
Why is K+ larger than ca2+?
K+ is larger than Ca2+ . is larger than . |rmK+ is larger than Ca2+ because Ca2+ has the greater charge. |rmK+ is larger than Ca2+ because the increase in electron repulsions that accompany addition of an electron causes the electron cloud to expand.
Which atoms have the largest radius?
The element which has the largest atomic radius is Cesium. Atomic Radius is defined as the distance between the center of the nucleus and the outermost shell of an atom. Cesium has 6 orbital shells, which means that it automatically is big.
Which of the following atoms is larger than iodine?
Strontium atoms are larger than iodine atoms because iodine has more protons.
Which is the smallest atom?
If by “biggest” and “smallest”, you mean mass (which is a measure of how much matter is there), then the smallest is the hydrogen atom with one proton and one electron. Since electrons are about 2000 times less massive than protons (and neutrons), then the mass of an atom is mostly from the protons and neutrons.
Why is an atom of K+ smaller than an atom of K?
When it becomes ion as K+, so due to lose of electron, it has 19-protons & 18-electrons. Due to excess of proton in potassium ion, electron-proton attraction becomes dominant which makes its size smaller as compared to potassium atom which is basically neutral having no charge. .
Which atom has the highest ionization energy?
heliumThe ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.
Why is gallium smaller than Aluminium?
Gallium has smaller atomic radius than aluminium because of. Greater shielding power d electrons of `Ga atom.
What is the heaviest element known to man?
uraniumThe heaviest element found in any appreciable amount in nature is uranium, atomic number 92. (The atomic number refers to the number of protons in an atom’s nucleus.) Beyond that, scientists must create new elements in accelerators, usually by smashing a beam of light atoms into a target of heavy atoms.
Is K or Br atom bigger?
Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.
What is the biggest element?
franciumAtomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.
Is H bigger than F?
Hence though fluorine has an extra shell but due to the increased attractive forces of the nucleus on the orbiting electrons the radius decreases and in the free state both have almost an equal radius hydrogen(78 pm), fluorine(71 pm) but on adding that extra electron the increase in radius for hydrogen is more than …