What does anion mean?
What is an anion? An anion has more electrons than protons, consequently giving it a net negative charge. For an anion to form, one or more electrons must be gained, typically pulled away from other atoms with a weaker affinity for them.
Which atom is most likely to form a 1 ion?
The alkali metals (shown in yellow) always form +1 ions.
Which atom is most likely to form a 3 ion?
A nitrogen atom must gain three electrons to have the same number of electrons as an atom of the following noble gas, neon. Thus, a nitrogen atom will form an anion with three more electrons than protons and a charge of 3−. The symbol for the ion is N3−, and it is called a nitride ion.
Which atom is most likely to form a negative ion?
And thus nitrogen, oxygen, fluorine, chlorine, etc. TEND to form negative ions, i.e. N3− , O2− , F− , and Cl− ; clearly the PARENT atoms (or molecules) are oxidizing species.
Which of the following best describes atoms?
Both protons and neutrons are placed inside the nucleus of an atom. This nucleus is surrounded by the electrons as electrons revolve around the nucleus. Thus, we can conclude that out of the given options, a core of protons and neutrons surrounded by electrons best describes an atom.
Which best describes where electrons are located in an atom?
Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus.
Is an atom positive or negative?
An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral.
Which best defines a compound?
Answer: A compound is a substance formed when two or more chemical elements are chemically bonded together. In mixtures, the substances present are not chemically bonded together. The type of bonds holding elements together in a compound can vary: two common types are covalent bonds and ionic bonds.
Which element is the most important in the human body?
The most important structural element, and the reason we are known as carbon-based life forms. About 12 per cent of your body’s atoms are carbon. The hydrogen atoms in your body were formed in the Big Bang.
Which is the best description of a molecule?
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.
Which has only one type of atom throughout?
element
What is a single atom called?
Some elements are monatomic, meaning they are made of a single (mon-) atom (-atomic) in their molecular form. Helium (He, see Fig. 2.8) is an example of a monatomic element.
Which of these is the smallest particle?
An atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton’s Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible.
Which is the smallest subatomic particle?
quark
Who discovered the electron?
Thomson
What is the biggest thing in the universe?
The largest known structure in the Universe is called the ‘Hercules-Corona Borealis Great Wall’, discovered in November 2013. This object is a galactic filament, a vast group of galaxies bound together by gravity, about 10 billion light-years away.
What is the most powerful thing on earth?
Take the world’s most powerful computer, the IBM Roadrunner. With the ability to process 1 million billion calculations per second, this supercomputer has the strength of 100,000 MacBooks combined.
What is the strongest force in the universe?
strong nuclear force
What is the most powerful emotion in the world?
Anger
What is the most powerful star?
The biggest: UY Scuti But if it had started its life with a dozen or so times its current mass, it could have eventually evolved into a red supergiant. (UY Scuti has already shed a lot of mass.) The biggest of these stars, sometimes called hypergiants, can swell to more than 1,000 times the size of the Sun.