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Hydrogen [H] has one proton. Its atomic number is 1 which is the number of protons. Also, the number of protons will always equal the number of electrons unless the element has a charge.

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Q: What element is composed of one proton and one neutron?
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What element has one proton and zero neutrons?

Hydrogen ion is the only element that has no neutron and one proton. That is why it is basically a proton.


What is an atom name that is made of a proton a neutron and an electron?

It is the atom of deuterium. Its nucleus is composed of a proton and one neutron. The atom has one electron that is orbiting around the nucleus.


What is an example of an atom without a neutron?

The only element that does not have a neutron in its nucleus is hydrogen-1, which consists of one proton and one electron.


Which particle has a close mass to proton?

The neutron, which is slightly more massive. The neutron is composed up two down quarks and one up quark (charges of -1/3 and 2/3 [in terms of proton charge], respectively) and the proton is composed of one down quark and two up quarks.


Deuterium is an element with one proton and one neutron Deuterium is called a an?

An isotope of Hydrogen Apex:)


How does radioactive decay produce new elements?

In alpha decay, the nucleus loses two protons and two neutrons. The resulting element will therefore have an element number that is two less.In beta minus decay, a neutron gets converted to a proton. The resulting element will have one more proton - the element number will be one more. In beta plus decay, a proton gets converted to a neutron. The resulting element will have one less proton - the element number will be one less.


How many protons does an atom of the first element listed on the periodic table have?

Hydrogen, being the first element, has one proton and one neutron in its nucleus.


What are atoms of the same element but have different sums of protons and neutrons?

The Proton number defines the element, so there cannot be two atoms of the same element with different proton numbers, because they will be, by definition, different elements. Neutron numbers can differ though. When one element has different neutron configurations, these are called Isotopes.


What atom has only 2 elements?

An atom is an element so it cannot contain 2 of its own. But now if your asking the elements of the atom such as proton, neutron, and electron, the only atom would be H+ with one proton and one neutron.


Which element does not belong radon radium polonium deuterium?

Deuterium is a natural isotope of hydrogen with one neutron and one proton.


What element is the simplest atom?

The element hydrogen is the simplest atom and the most abundant in the universe. It is composed of one proton and one electron.


What is the mass number for 1 proton and 0 neutrons?

The mass number is (by definition) the total sum of proton and neutron number in the nucleus of one particular isotope of an element.