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Short Answer:
By weight, oxygen makes up approximately 65% of the human body.
Numerically, hydrogen approaches 65% of the total number of atoms in the human body, but it is probably closer to 63% for most people.
Accounting by Mass:
The mass of the human body is provided mostly by oxygen, carbon, hydrogen, nitrogen. Together these elements account for about 96% of the mass of a human.
Add in about a kilogram of calcium in the bones and body fluids and you are up to 97.4%. All of this depends on the particular person since water, our major component, can differ by 10% from one individual to another.
That said, typically the breakdown goes like this.
Oxygen: 65% of the mass
Carbon: 18% of the mass
Hydrogen: 10% of the mass
Nitrogen: 3% of the mass
Calcium: 1.4 % of the mass
Phosphorus 1.1% of the mass
With phosphorus, one has accounted for 98.5% of the mass of the typical human and that will change by a couple of tenths from person to person.
What else can I help you with?
The Most Abundant element in human body?
based on our fundemental constituant being Carbon and its adherance to oxygen as CO2 and Hydrogen H2O (being 70% approx of body mass), then on mass is would be Oxygen.
Which element is almost twice as abundant by mass as hydrogen in the human body?
Element composition of the human body: 65% Oxygen 18% CARBON 10% Hydrogen 7% All other elements
Percentage of oxygen in human body?
Oxygen makes up about 65% of the human body by mass. It is a vital element for cellular respiration and energy production in the body.
What is the predominant element in the human body?
The predominant element in the human body is oxygen, which makes up approximately 65% of the body's mass. This essential element is found in compounds like water and plays a crucial role in respiration and energy production.
What is the common element in the human body?
By mass, oxygen By atoms, hydrogen
What element makes up 1.6 percent of the human body?
Calcium provides about 1.4-1.6 % of the mass of the human body. It is only .24 % of total number of atoms, but it weighs more than most. An adult person has about a kilogram of calcium in their body.
What element makes up seventy-five percent of the sun's mass?
Hydrogen.
What element makes up seventy five percent of the suns mass?
Hydrogen.
Which element has the lowest mass on the periodic table?
The atom that has the lowest mass is hydrogen. So assuming the same numbers of atoms in each element, hydrogen would be the element with the lowest mass.
By weight what element that makes up the greatest fraction of the humn body?
By mass, it is oxygen.
What element that makes up the greatest percentage of weight in the body?
Oxygen is the element that makes up the greatest percentage of weight in the body, comprising about 65% of the body's mass.
How r isotopes of the same element alike?
They have the same number of protons this is what makes them the same element but they differ in atomic mass and neutrons.
