Which element has the greatest desire for electrons?
Br
Why are chemists so interested in the number of valence electrons in atoms?
Answer: Those valence electrons are the ones lost, gained, or shared. Being able to determine the number of valence electrons in a particular atom gives you a big clue as to how that atom will react.
What is the octet rule in chemistry?
chemical bonding …are expressed by his celebrated octet rule, which states that electron transfer or electron sharing proceeds until an atom has acquired an octet of electrons (i.e., the eight electrons characteristic of the valence shell of a noble gas atom). When complete transfer occurs, the bonding is ionic.
Why is he bigger than H?
Answers and Replies. Helium has smaller radius than hydrogen because in helium the electrons are attracted by a larger nuclear charge that is not fully “screened” by the electron-electron interaction.
Why is atomic radius of K greater than Br?
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.
How do atoms interact when they are far apart?
If two atoms are too far apart, their interaction is too weak compared to other surrounding bodies to amount to anything. In the Van der Walls effect, two atoms brought close to each other induce electric dipole moments in each other, and these dipoles then attract each other weakly through electrostatic attraction.
Can you ever really touch something?
Particles are, by their very nature, attracted to particles with an opposite charge, and they repel other similarly charged particles. This prevents electrons from ever coming in direct contact (in an atomic sense and literal sense). Their wave packets, on the other hand, can overlap, but never touch.
Can you pull atoms apart?
Summary: Researchers have just shown how a single atom can be split into its two halves, pulled apart and put back together again. While the word “atom” literally means “indivisible,” the laws of quantum mechanics allow dividing atoms — similarly to light rays — and reuniting them.
What happens when 2 atoms collide?
Originally Answered: What happens if 2 atoms collide? If the outer (valence) shells of the colliding atoms are capable of forming a chemical bond that will occur. If not, the two atoms will probably rebound and continue to circulate.
Is K or Ba bigger?
As we move across the period atomic size and ionic radii decreases. (K 19) has ionic radii (152), while barium (Ba 56) has ionic radii (149), there is no much difference and both almost have the same size with potassium being little bigger. …
Which one has the largest radius?
francium
Which element has the largest atomic radius N or P?
Thus as group 14 elements are arranged in group as N, P , As and Sb, Sb has largest atomic radius.
Which metal has the smallest atomic radius?
Helium
Which atom is the smallest?
hydrogen atom
What is Franciums atomic radius?
348 pm
How hard is it to get francium?
Outside the laboratory, francium is extremely rare, with trace amounts found in uranium and thorium ores, where the isotope francium-223 continually forms and decays.
Is francium used in bombs?
Since the metal is alkaline, it is believed to react violently with water, producing francium hydroxide and hydrogen, and a massive amount of heat. So far, no such experiment has been conducted to prove it even though many false claims have been made showing francium exploding like a bomb when dropped in the ocean.
Is Cesium 137 a beta emitter?
Caesium 137 is a radioactive element with a relatively long half-life of 30.15 years. This particular isotope of caesium is both a beta and gamma emitter. It is produced in some abundance by fission reactions.
What is the biggest particle in an atom?
Electrons are the largest particles in an atom. A quark is a small particle that makes up protons & neutrons. T or F 8. The atomic number tells you the number of electrons in the nucleus of an atom.