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What is the second quantum number of a 2s2 electron in phosphorus 1s22s22p63s23p3?
ml=0
What identify the number of protons neutrons and electrons in the atom.?
The number of protons in an atom is equal to its atomic number, which identifies the element. Neutrons are found by subtracting the atomic number from the mass number. For a neutral atom, the number of electrons is equal to the number of protons.
What is the first quantum number of a 2s2 electron in phosphorus 1s22s22p63s23p3?
n = 2
What is the first quantum number of a 1s2 electron in phosphorus 1s22s22p63s23p3?
n=1
Explain the difference between atomic number and mass number?
Atomic number is the number of protons in the nucleus of an atom while the mass number is the sum of the protons and neutrons in the nucleus of an atom. for example lithium has an atomic number of 3 and a mass number of 7. Therefore lithium has 3 protons and 4 neutrons.
What is the electron configuration for an atom that has 15 electrons?
The electron configuration for an atom with 15 electrons is 1s2 2s2 2p6 3s2 3p3. This corresponds to the electron arrangement of the element phosphorus (P).
What period and group is 1s22s22p63s23p3 in?
The electron configuration 1s22s22p63s23p3 is in the third period and belongs to the halogen group (Group 17) on the periodic table.
Does the number of protons in an atom identify an atom of a particular element?
Yes
Who was the first person to identify the atom?
Democritus.
Is it positive to identify an atom by the number of protons it has?
The number of protons in the nucleus of an atom positively identifies the element of which the atom is an example, whether the atom is neutral or ionized.
What is the complete ground state electron configuration for the phosphorus atom?
The ground state electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. This means phosphorus has 15 electrons distributed in its electron shells according to the aufbau principle.
Does the number of protons identify an atom as a specific element?
Yes.
What is the electronic configuration for the element phosphorus?
Shell Type EC: 2,8,5Quantum Shell EC: 1s22s22p63s23p3
The number of protons in an atoms nucleus which serves to identify an atom?
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What number allows you to identify an atom as a particular element?
The Atomic number
How did chemists identify the different parts of an atom?
This is a problem of atomic physics !
Who was the first person to identify an atom and state that it could not be divided?
Democritus
