ahankaranth
18.09.2019 •
Chemistry
What are the terms that describe these values for the element oxygen?
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Ответ:
18 = Mass umber
8 = atomic number
Explanation:
An atom is smallest unit of a matter or substance.It consist of three subatomic particles : electrons, protons, neutrons.
Protons and neutrons are located in the center of an atom where while mass of an atom is concentrated.
Mass number = Number of protons + Number of neutrons
Atomic number = Number of protons = Number of electrons (for a neutral atom)
General representation of an element is given as:
where,
Z represents Atomic number
A represents Mass number
X represents the symbol of an element
Oxygen is the 8th element of the periodic table and is written as , thus 8 = atomic number and 18= Mass number
Ответ:
Bone marrow
Explanation:
Red blood cells are formed in the red bone marrow of bones.