What is the mass number of arsenic-75?
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What is the mass number of arsenic-75?
74.921 595
Arsenic
| Isotope | Atomic mass (Da) | Isotopic abundance (amount fraction) |
|---|---|---|
| 75As | 74.921 595(6) | 1 |
What is the number of mass of arsenic?
75
The mass number for arsenic is 75.
How do you find the mass number?
Together, the number of protons and the number of neutrons determine an element’s mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.
What is the mass number of arsenic 73?
72.92383
Arsenic-73
| PubChem CID | 6336622 |
|---|---|
| Structure | Find Similar Structures |
| Molecular Formula | As |
| Synonyms | Arsenic-73 15422-59-0 |
| Molecular Weight | 72.92383 |
Why is arsenic called arsenic?
Arsenic gets its name from a Persian word for the yellow pigment now known as orpiment. For keen lexicographers apparently the Persian word in question Zarnikh was subsequently borrowed by the Greeks for their word arsenikon which means masculine or potent.
Where do you find arsenic in everyday life?
The highest levels of arsenic (in all forms) in foods can be found in seafood, rice, rice cereal (and other rice products), mushrooms, and poultry, although many other foods, including some fruit juices, can also contain arsenic.
What exactly is arsenic?
Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid.
Which group is known as arsenic group?
nitrogen group
arsenic (As), a chemical element in the nitrogen group (Group 15 [Va] of the periodic table), existing in both gray and yellow crystalline forms.
What is the mass number of iron 56?
55.934
Iron-56
| General | |
|---|---|
| Isotope mass | 55.9349375(7) u |
| Spin | 0+ |
| Excess energy | −60601.003± 1.354 keV |
| Binding energy | 492253.892± 1.356 keV |
What is mass number example?
(ii) Mass number: It is the sum of the number of neutrons and the number of protons. For example, the atomic number of Lithium is 4 which is equal to the number of protons, the number of neutrons of magnesium is 4. The mass number is equal to 8(4+4).
How much does arsenic cost?
~ In its pure form, arsenic costs $320 per 100g. ~ Arsenic compounds were mined by the early Chinese, Greek, and Egyptian civilizations. No doubt they discovered its toxic properties early on.
How many neutrons does arsenic-75?
42 neutrons
Arsenic-75 33 protons 42 neutrons 33 electrons B.
What is the mass for one mole of arsenic?
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Arsenic, or 74.9216 grams. Note that rounding errors may occur, so always check the results.
What is the acceptable level of arsenic?
The daily intake of total arsenic from food and beverages is generally between 20 and 300 µg/day. Limited data indicate that approximately 25\% of the arsenic present in food is inorganic, but this depends highly on the type of food ingested. Inorganic arsenic levels in fish and shellfish are low (< 1\%).
What element has 33 protons?
My element is Arsenic, Which has 33 protons and electrons and 42 neutrons en.wikipedia.org Arsenic – Wikipedia. Arsenic is used for making rat poisons because of the abundance of this element www.ehow.com Arsenic is a toxic element that is classified as a metalloid.
How many mass does arsenic have?
Name: Arsenic Symbol: As Atomic Number: 33 Atomic Mass: 74.9216 amu Melting Point: 817.0 °C (1090.15 K, 1502.6 °F) Boiling Point: 613.0 °C (886.15 K, 1135.4 °F) Number of Protons/Electrons: 33 Number of Neutrons: 42 Classification: Metalloid Crystal Structure: Rhombohedral Density @ 293 K: 5.72 g/cm 3 Color: Gray Atomic Structure