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How many protons neutrons and electrons are in technetium-99?
Technetium has 43 protons, 43 electrons (in the neutral atom), and a differing number of neutrons depending on which isotope of the element is being considered. There are no stable isotopes of technetium, and it's discovery was a long time coming, though it had been predicted to exist by none other than Mendeleev himself. The longest lived isotopes (many thousand years half-lives) have 54, 55, and 56 neutrons, and isotopes have been recorded with from 42 to 75 neutrons. Other than the three isotopes mentioned, the isotopes of technetium have half-lives measured in days to seconds to small fractions of a second. Outside 97Tc, 98Tc and 99Tc, none of the atoms of this synthetic transition metal hang around long.
How can you make a 3d oxygen atom model?
Easy. Get the valence of fluorine ( no. of electrons on outermost orbital) and the protons and neutrons. Obtain a wire coat hanger and form into circle about 8 inch diameter. Form another wire hanger but smaller diameter, say 6 inches. Create or obtain plastic or styrofoam balls. Attach it to the outer ring ( 8 electrons). Add 2 balls to the inner ring. Create a mound using aluminum foil then stick a smaller balls representing neutrons and protons. Run a string to all rings and mound, Color it and label it. Done.
What are five neutral things found around the house?
Chairs: a common piece of furniture used for seating. Lamps: provide light in a room. Curtains: hang on windows for privacy and to block light. Rugs: placed on the floor for decoration or to protect the surface. Clocks: used to tell time and as a decorative piece.
Why are large nuclei unstable?
So you wanna know why there aren't any stable atoms with atomic numbers greater than 83 (bismuth)? We're gonna find out, and to do so, we'll bounce around a bit in review and then fall on the answer. Buckle up. Ready? Let's do this. Atoms are comprised of protons, neutrons (in anything but "simple" hydrogen - 1H) and electrons. Set aside the electrons and let's look just at the nucleons. That's the name we give components of the nucleus, our protons and neutrons. Remember the basic laws of electrostatics? Like charges repel and opposites ones attract, right? Good. Let's jump. The atomic identity (sometimes called the proton number) of an atom is due solely to the number of protons in its nucleus. Only that. And in anything but 1H there are neutrons in the nucleus. Let's look at helium. It has two protons. Always. But it sometimes has a single neutron in its nucleus, and sometimes it has two neutrons. The one-neutron nucleus is very rare, and the two-neutron nucleus is super common. But look how it's made! You recall that when some hydrogen is squished down and turned into helium, that's fusion, right? Right. Now the news. Focus. The protons don't like each other. They're both positive, and repel. They'd rather not hang out together in a nucleus. But in helium, a neutron, or, most frequently, two neutrons, are "welded together" with the two protons to form the nucleus. What happens is that under extreme conditions (fusion), the protons and the neutron or two all go to Jenny Craig and give up some weight. This mass that they lose (called mass deficit), is converted into binding energy (or nuclear glue) to stick the whole thing together. That way we can get a stable nucleus with the two protons at least tolerating things. And the two different configurations, the one- and two-neutrons units, are called isotopes of helium. The word isotope speaks to atoms of a given element that have different numbers of neutrons in their nuclei. Got it? Good. Jump with me. In review, remember that whenever any heavier-than-hydrogen nucleus is formed by fusion, it must include neutrons. And all the nucleons that are going to be forming that nucleus (whichever one it might be) are going to 24-Hour Fitness. They're gonna be working off some weight (mass) to have it converted into binding energy. That's the only way to get the whole thing to stick together. Oh, and the binding energy thing is orchestrated by the strong force. That's new info. But don't get hung up there or you'll slide over to quantum chromodynamics (QCD), and it ain't time for that yet. As we build atoms bigger and better, it takes a few more neutrons at those higher atomic numbers to help create the binding energy. So when we get to heavier and heavier nuclei, the number of protons continues to climb, and the repulsive forces at work in the nucleus, the ones the binding energy is overcoming to keep the thing together, start to go outa sight. Eventually we simply can't make a heavier nucleus. The binding energy is insufficiently strong, even though we keep making more of it. And bismuth is the heaviest of the stable nuclei. Bummer. Oh, we can make heavier nuclei, we just can't keep them from just falling apart after a while. There are quite a few elements past bismuth. And they're all unstable, all radioactive with half lives of seconds to millions of years. All of them. All the elements and all of their isotopes. The mass deficit that creates binding energy will, at some point, be unable to overpower the repulsion of a large proton mass in the nucleus of a heavy element and keep it together. Nope, can't be done. Bismuth? Atomic number 89? End of the line for stable elements.
How many sort of atoms has neon got?
We can generally say that there are 10 electrons in all neon atoms, regardless of which isotope we consider. Neon is a noble or inert gas. It doesn't want to react with any other atoms. That means it wants to hang onto all its electrons, neither wanting to loan or borrow any. Regardless of the number of neutrons in the nucleus of a neon atom, it's still neon, and will have 10 electrons under normal circumstances.
How many protons neutrons and electrons are in technetium-99?
Technetium has 43 protons, 43 electrons (in the neutral atom), and a differing number of neutrons depending on which isotope of the element is being considered. There are no stable isotopes of technetium, and it's discovery was a long time coming, though it had been predicted to exist by none other than Mendeleev himself. The longest lived isotopes (many thousand years half-lives) have 54, 55, and 56 neutrons, and isotopes have been recorded with from 42 to 75 neutrons. Other than the three isotopes mentioned, the isotopes of technetium have half-lives measured in days to seconds to small fractions of a second. Outside 97Tc, 98Tc and 99Tc, none of the atoms of this synthetic transition metal hang around long.
Which part of an atom is positively charged and which part is negatively charged?
It is the nucleus of an atom that is positively charged. You'll recall that an atom is made up of protons, neutrons and electrons (hydrogen-1 excepted). And the protons and neutrons hang out in the nucleus, giving it an overall positive charge because the proton has a positive change.
What are the 2 regions of the atom?
In general, the nucleus and the electron cloud are the two distinct features of the volume of the atom. The nucleus is home to the proton(s) and whatever neutrons are present, and the electron cloud is where the electrons all hang out. The nucleus, with its protons and neutrons, has most of an atom's mass concentrated there. The electrons are relatively far away, and the orbits they describe give the atom its "shape" by defining its volume in space.
What continent does the clown fish hang around?
The clownfish doesn't "hang around" any continent. Clownfish live in the Pacific Ocean, are found near the continents Asia, Africa and Austrailia.
What is the meaning of to hang around?
to hang around with people
What are the three properties you could use to distinguish a proton from an electron?
Protons are positively charged particles, electrons have negative charge.Protons are found inside the nucleus of an atom, electrons are found outside the nucleus of an atom. Protons have a mass of 1.00728 amu, electrons have a mass of 0.0005486 amu
What is a Hang Around Security?
how would you explain hang around security
What landforms do emus hang around?
Emus are most commonly found on the flat plains, in grasslands or open bushland.
When was Reasons to Hang Around created?
Reasons to Hang Around was created in 2006.
Why dont they hang around together and they are going out?
they dn't hang around because they have sex
What plants and animals do jellyfish hang around?
There are many plants and animals that jellyfish like to hang around. Jellyfish particularly like to hang around the fish they eat.
How are isotopes and the number of electrons related?
Before we tackle isotopes and neutrons, lets talk about protons. The number of protons in an atom determines the elemental identity of the atom. Only that. Now to the question. Atoms of a given element have a specific number of protons in the nucleus, but can have a modest variety of numbers of neutrons in their nuclei. Let's look at hydrogen. Hydrogen is identified by the fact that there is a single proton in the nucleus. Most hydrogen is just that. But some hydrogen has a neutron stuck to the one proton in the nucleus. This creates another "flavor" of hydrogen. It's another isotope of hydrogen. We have the original isotope of hydrogen (with one proton and no neutron) and the isotope with the one proton and one neutron. Now we look at the last and most unusual isotope of hydrogen. It has the one proton and two neutrons. Hydrogen has three isotopes, and each has the same number of protons (each isotope is hydrogen) and each has a different number of neutrons: zero, one and two. Heavier elements have varying numbers of neutrons in combinations with there protons. This creates a number of different isotopes for each and every element. It is the variable numbers of neutrons that can hang out with the protons in a given element's nucleus that give rise to the different isotopes of that element. Our friends at Wikipedia have some details. A link is provided.
