• Atomic Mass Is Equal To Electrons
• Atomic Mass Equals The Number Of
• Atomic Mass Calculation Formula
• Atomic Mass Is Equal To The Sum Of
• Atomic Mass Is Equal To Molar Mass

One atomic mass unit is equal to 1/12 of the mass of a single C12 or carbon-12 atom with a value of 1.660 539 066 60 (50) × 10 −27 kg. For example, the mass of a carbon-12 atom equaled to12 amu. As electrons are very light in weight, so, the mass of a carbon-12 isotope is composed of 6 neutrons and 6 protons. Atomic Mass unit is equal to one-twelfth of the mass of a carbon-12 atomic mass is equal to one-twelfth of the mass of a carbon-12Atomic Mass is equal to the number of protons and neutrons. Atomic number, chemical symbol, and mass number Carbon has an atomic number of six, and two stable isotopes with mass numbers of twelve and thirteen, respectively. Its average atomic mass is 12.11. Scientists determine the atomic mass by calculating the mean of the mass numbers for its naturally-occurring isotopes.

A carbon atom has six protons. This means that a carbon atom also has

a) Six electrons

b) Six neutrons

Explanation:

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C. The sum of the masses of protons and neutrons in an atom.

Explanation:

Atomic Mass Is Equal To Electrons

We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus. Electron has a negative charge and is written as e⁻. The mass of electron is 9.10938356×10⁻³¹ Kg . While mass of proton and neutron is 1.672623×10⁻²⁷Kg and 1.674929×10⁻²⁷ Kg respectively.

Symbol of proton= P⁺

Symbol of neutron= n⁰

The number of proton or number of electrons are called atomic number while atomic mass of an atom is sum of mases of protons and neutrons. An electrically neutral atom always have equal number of protons and electrons and when an atom loses its valance electron the number of protons increases and thus positive charge increased and atom form cation.

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The atomic mass is equal to mass number

The correct option is C) The number of protons is equal to the number of electrons.

Explanation:

Atoms are made up of particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom and form the nucleus, while electrons surround the nucleus. Electrons have a negative charge. The charge of the protons is positive and finally, the neutrons have no charge.

If the atom has no charge, this means that the total charge of the atomic nucleus, which is positive due to the presence of the protons, is equal to the negative charge of the electrons, so that it cancels out.

So, the correct option is C) The number of protons is equal to the number of electrons.

Atomic Mass Equals The Number Of

The mass number

Explanation:

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Atomic Mass Calculation Formula

The mass number of an atom specifies the numbers of particles in the nucleus. It is the sum of the number of protons and neutrons. In scientific writing, the mass number is usually located to the upper left of an atom’s symbol. When given together with the atomic number, or the number of protons, the mass number tells an atom’s element and isotope.

An atom consists of protons, neutrons and electrons. Both protons and neutrons are located in the nucleus of an atom and have masses roughly 1,800 times larger than the more mobile electrons. Protons and electrons have opposite electrical charges; for an atom to be electrically neutral, the number of protons must equal the number of electrons. Neutrons have no electrical charge.

The number of protons in an atomic nucleus determines which element the atom is. An atom with eight protons is an oxygen atom, for example. The number of neutrons in an atom, however, can vary somewhat and remain the same element; these varieties are called isotopes. An oxygen atom can contain eight, nine, or 10 neutrons and still be stable. Adding the number of protons and neutrons together gives the mass number.

A convention is commonly used for representing information about atoms in writing. An atom’s symbol on the periodic table indicates the atomic number. The mass number is located in the superscript position to the left of the atom symbol. A net electrical charge, if present, is written in the superscript position to the right. These three pieces of information reveal the total number of protons, neutrons and electrons, respectively.

Atomic Mass Is Equal To The Sum Of

The existence of different isotopes is the result of radioactive decay. One of the four fundamental forces of nature, the weak nuclear force, causes atoms to release energy without any contact with other matter. In alpha decay, two protons and two neutrons escape an atom entirely. In beta decay, a neutron can change into a proton. In this case, the mass number will stay the same, but the atomic number will increase by one.

Atomic Mass Is Equal To Molar Mass

It is important to distinguish mass number from atomic mass. The mass number is always an integer with no associated units. The atomic mass is a measurement of an atom’s mass and must have units of mass. While any unit for mass is valid, the most common unit used for atomic mass is the atomic mass unit. One atomic mass unit is equal to 1.66 x 10^-24 grams.