- What has 53 protons and 74 neutrons?
- Why does an atom have no overall charge?
- Is there a transition element in period 2?
- What number increases from 3/10 to Period 2?
- What element has 46 neutrons?
- How do you identify elements?
- How do you know the charge of an atom?
- What element has a mass number of 45?
- What is the rarest metal on earth?
- How do you find an isotope?
- What metal is rarer than gold?
- What are the first 40 elements and their symbols?
- What element has 36 protons and 46 neutrons?
- What are the 30 elements?
- Is oxygen more reactive than fluorine?
- Why is element 118 so expensive?
- What element has 16 protons and 18 neutrons?
- What are the 50 elements and their symbols?
- How do you identify atoms?
- What is the strongest metal in the world?
- What are the first 10 elements and their symbols?
- How do you find an element with only neutrons?
- Why do isotopes exist?
- What is the atomic mass for an element with 35 protons and 45 neutrons?
- Which element in period two has the most mass?
- What element has 51 neutrons?
- What metal is 30 times rarer than gold?
What has 53 protons and 74 neutrons?
The atomic number of iodine (53) tells us that a neutral iodine atom contains 53 protons in its nucleus and 53 electrons outside its nucleus.
Because the sum of the numbers of protons and neutrons equals the mass number, 127, the number of neutrons is 74 (127 – 53 = 74)..
Why does an atom have no overall charge?
Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
Is there a transition element in period 2?
The name transition metal refers to the position in the periodic table of elements. The transition elements represent the successive addition of electrons to the d atomic orbitals of the atoms….Transition Metals. Inner Transition Metals.Group*** Period23 Li 6.9414 Be 9.0125 B 10.816 C 12.0111 more columns
What number increases from 3/10 to Period 2?
In the periodic table, atomic number increases from 3 to 10 in period 2. Explanation: Atomic numnber is the total number of protons present in an atom.
What element has 46 neutrons?
Bromine (Br)Bromine (Br), at atomic number 35, has a greater variety of isotopes. The atomic mass of bromine (Br) is 79.90. There are two main isotopes at 79 and 81, which average out to the 79.90amu value. The 79 has 44 neutrons and the 81 has 46 neutrons.
How do you identify elements?
The simplest way to use the periodic table to identify an element is by looking for the element’s name or elemental symbol. The periodic table can be used to identify an element by looking for the element’s atomic number. The atomic number of an element is the number of protons found within the atoms of that element.
How do you know the charge of an atom?
The charge of an element is equal to the number of protons minus the number of electrons. The number of protons is equal to the atomic number of the element given in the periodic table. The number of electrons is equal to the atomic number minus the charge of the atom.
What element has a mass number of 45?
The elemenents of the periodic table sorted by atomic massAtomic MassName chemical elementnumber101.07Ruthenium44102.9055Rhodium45106.42Palladium46107.8682Silver47108 more rows
What is the rarest metal on earth?
RhodiumRhodium is a silver-white metallic element that is highly reflective and resistant to corrosion. It is considered the rarest and most valuable precious metal in the world — well above gold or silver.
How do you find an isotope?
Isotopes are atoms with the same number of protons but that have a different number of neutrons. Since the atomic number is equal to the number of protons and the atomic mass is the sum of protons and neutrons, we can also say that isotopes are elements with the same atomic number but different mass numbers.
What metal is rarer than gold?
palladiumPlatinum is much rarer than both gold and silver — so rare, in fact, that all of the platinum ever mined could fit into your living room. And palladium is even rarer than that. Unlike gold, these metals derive much of their value from industrial uses.
What are the first 40 elements and their symbols?
First 40 Chemical Elements & Their SymbolsABHydrogenHHeliumHeLithiumLiBerylliumBe36 more rows
What element has 36 protons and 46 neutrons?
NameKryptonAtomic Mass83.8 atomic mass unitsNumber of Protons36Number of Neutrons48Number of Electrons369 more rows
What are the 30 elements?
The elements of the periodic table sorted by atomic numberAtomic numberName chemical elementSymbol27CobaltCo28NickelNi29CopperCu30ZincZn114 more rows
Is oxygen more reactive than fluorine?
Fluorine is the most reactive because it has the strongest attraction for oxygen. … Since electronegativity decreases going to the left of the periodic table, oxygen is the second most reactive element on the list.
Why is element 118 so expensive?
The most expensive natural element is francium, but it decays so quickly it can’t be collected to be sold. If you could buy it, you’d pay billions of dollars for 100 grams. The most expensive natural element that is stable enough to purchase is lutetium. … Atoms of synthetic elements cost millions of dollars to produce.
What element has 16 protons and 18 neutrons?
sulfurThus, each atom or ion of sulfur must contain 16 protons. We are told that the ion also has 16 neutrons, meaning the mass number of the ion is 16 + 16 = 32. Because the ion has 16 protons and 18 electrons, its net charge is 2–. Thus, the symbol for the ion is 32S2–.
What are the 50 elements and their symbols?
118 Elements and Their Symbols and Atomic NumbersName of the ElementSymbol of the ElementAtomic NumberCadmiumCd48IndiumIn49TinSn50AntimonySb5186 more rows
How do you identify atoms?
The atomic number of an atom identifies the number of protons in the atom. This is the defining characteristic of an element. An atom can gain or lose neutrons or electrons while retaining its elemental identity. If the number of protons in an atom changes, however, the atom becomes a different element.
What is the strongest metal in the world?
tungstenIn terms of tensile strength, tungsten is the strongest out of any natural metal (142,000 psi). But in terms of impact strength, tungsten is weak — it’s a brittle metal that’s known to shatter on impact. Titanium, on the other hand, has a tensile strength of 63,000 psi.
What are the first 10 elements and their symbols?
Terms in this set (10)Hydrogen. H.Helium. He.Lithium. Li.Beryllium. Be.Boron. B.Carbon. C.Nitrogen. N.Oxygen. O.More items…
How do you find an element with only neutrons?
It is not possible to accurately identify an element given only the number of neutrons. All atoms are made of three particles: electrons, protons and neutrons. The number of electrons is equal to the number of protons if the atom is uncharged. The atomic mass of an element is the sum of the mass of all the particles.
Why do isotopes exist?
Isotopes are atoms of the same element with different masses. They get these different masses by having different numbers of neutrons in their nucleii. … When an unstable isotope decays, it makes a new atom of a different element.
What is the atomic mass for an element with 35 protons and 45 neutrons?
Explanation: If there are 35 protons, then Z,the atomic number=35 . The mass of the nuclide is 80⋅amu .
Which element in period two has the most mass?
1 Answer. The element in Period 2 with most mass is clearly the element with the highest atomic number, Z , and that is Ne , Z=10 , 21.08⋅g⋅mol−1 .
What element has 51 neutrons?
ZirconiumNameZirconiumAtomic Mass91.224 atomic mass unitsNumber of Protons40Number of Neutrons51Number of Electrons409 more rows
What metal is 30 times rarer than gold?
PalladiumPalladium, platinum, rhodium, ruthenium, iridium, and osmium form a group of elements referred to as the platinum group metals (PGMs). Palladium is 30 times more rare than gold. This rarity affects its price on commodities markets and the metal reached record highs of more than $1,800 in Oct.