Same number of protons; different number of neutrons. The number of electrons will also be the same, assuming a neutral atom.
Best regards seems to be little 'abrupt' whereas kind regards sounds smooth and easily flowing like 'kindness with inherent element of liking someone in a general manner'
Best regards seems to be little 'abrupt' whereas kind regards sounds smooth and easily flowing like 'kindness with inherent element of liking someone in a general manner'
No. Some may have different numbers of neutrons. Atoms of the same element (atoms with the same number of protons in the nucleus) may have different numbers of neutrons, and so will have different masses. As an example, chlorine is a mixture of different isotopes with some of the atoms having different neutrons numbers.
Particles Per Square Inch. :)
Usually, no. Alpha particles may be able to cause a lot of damage if they can get inside you, but they can easily be stopped by a piece of paper.
Probably silicon, and element frequently added to alloys, especially in cast metals.
since the interaction forces or vander waal forces between the particles of solid is more more than that of gas so they dont.....thx...with best regards..
A lot of them. The thing about the number of neutrons an atom can have is that it varies. There's this characteristic associated with atoms called isotopic identity. Each element has a given number of protons, and this is what determines what element it is. But that element can have a number of different "flavors" as regards how many neutrons it has. These are the different isotopes or radioisotopes of that element. It is nickel that is the only element with a stable isotope that has 33 neutrons. But note that there are a number of elements from Period 4 that have 33 neutrons. These isotopes will all be radioactive, of course, and some will be naturally occurring and some will be synthetic.
Elements can be an element of a set. Lets say you have a set of numbers like A{2,3,5,8,45,86,9,1} B{2,7,0,100} all those numbers are called elements of that set 2 is an element of set A and B 100 is an element of set B 45 is an element of set A
When it comes to atomic mass, each proton and each neutron (they're called nucleons when we talk about them in an atomic nucleus) in the nucleus of an atom add about 1 to the atomic mass. Just as a for instance, most hydrogen has just a proton for a nucleus. But some has a neutron attached to the proton, or, in extremely rare instances, two neutrons. In the case of "regular" hydrogen, its atomic mass is about 1 while hydrogen with a neutron stuck to its proton has an atomic mass of about 2. Atomic mass has to take into account some subtleties as regards atoms. Use the links below to sort it out.
office discipline
HEPA is a short form for the term High Efficient Particulate Air which refers to a good quality of air filter which removes harmful pollens and dust particles. A HEPA filter is for removal of particles indoors.