The correct answer is C. It was based on the thoughts of an early philosopher.
Explanation:
An atom is a basic and smallest unit that composes matter and that determine the properties of elements. Regarding the development of ideas related to atoms these did not begin in science but in philosophy; indeed the first person that proposed matter or elements were composed of certain smaller units was the philosophers Leucippus and his pupil Democritus in Ancient Greece, who stated atoms were eternal, infinite and defined the qualities of an object, idea that was supported by other Greek philosophers. But it was not until 16th and 17th centuries after the Middle Ages that the term re-emerged and until the 19th century it was officially proposed and there were experiments by scientists that later became a theory. Therefore, the development of the earliest idea about attoms differs from later work of scientists is that the earliest idea was based on the thoughts of an early philosopher.
The number of proton is the same as the atomic number;therefore, changing number of proton by decreasing it would change the element completely
Answer:
Explanation:
For any nuclear equation, we should utilize the law of mass conservation and the law of charge conservation. The sum of the masses on the left-hand side of the arrow should be equal to the sum of the masses on the right-hand side of the arrow (those are the superscripts for each nucleus). Similarly, the sums of charges should be equal (this is the law of charge conservation).
Let's say that the missing species is X with a mass of 'M' and charge of 'Z':
Find mass applying the mass balance law:
This means our particle X has a mass of 103. Let's find the atomic number (the charge) same way:
The atomic number of our nucleus is 40. That said, we have:
Find the element in the periodic table with Z = 40. This is Zr. Meaning we can now identify it fully:
The amount of atoms in each level and the positive and negative atoms in each level also
