a.26 electrons.29 neutrons,26protons=_________
b.53 protons,74 neutrons=_______
c.2 electrons (neutral atoms)=_______
so please answer these and explain how did you get them step by step please TT ^ TT
All atoms are made up of three principal type of particles: protons, neutrons, and electrons. Protons are positively charged particles.
The number of these protons in the nucleus of an atom determines which element this atom belongs to. The number of protons is defined as the "atomic number". No two elements have the same atomic number.
The nucleus of an atom may also contain neutrons in roughly the same number as the protons. Neutrons are about the same size and mass as the protons, but have no electrical charge. The total number of neutrons + protons is the atom's "mass number".
Since atoms are neutral particles, but contain positive protons in the nucleus, they also must contain negatively charged particles. They are called electrons, and they form a cloud around the nucleus. Electron's charge is equal but opposite to that of a proton, but their mass is so tiny, as to be negligible compared to mass of a proton or a neutron.
a. 26 electrons, 29 neutrons, 26 protons = _Fe or iron_
To identify an element, we need to know its atomic number, which in turn is its number of protons. Since there are 26 protons in this atom, its atomic number is 26. Looking up this atomic number on the Periodic Table of the Elements, we can identify this element as "Fe" or "iron".
b. 53 protons, 74 neutrons = _I or iodine_
Again, 53 protons indicate the atomic number of 53 that belongs to "I" or "iodine".
c. 2 electrons (neutral atoms) = _He or helium_
A neutral atom with two electrons will also have two protons and atomic number of 2. This identifies it as "He" or "helium".
d. 0 neutrons = _H or hydrogen_
The only atom that usually has no neutrons in its nucleus is the smallest one of all, or a "hydrogen" atom. Its nucleus only has one proton and atomic number of 1.
Periodic Table of the Elements