Because all atoms are neutral, the number of protons and electrons in an atom must be equal. 因为所有的原子都是电中性的,因此质子数与电子数一定是相等的。 figure 4.15-0 Thus, once you know the atomic number of an element, you know the number of protons and the number of electrons an ato...
How is an atom different from an element? What is formed when atoms form covalent bonds? What does each different element on the periodic table of elements represent? (a) What are the properties of elements and compounds? (b) How are properties of a compound related to elements that compris...
1.how are the atomic numbers and the atomic masses of the elements related to how the elements are arranged on the periodic table?2.how does the number of electrons relate to the arrangement what is the different in the number of electrons in a 3rd period element and the 2nd period ...
The number of protons in an atom of any given element is always the same. Physicists call this theatomic number. So, in the above example of lead, its atomic number is 82 and that does not change; if it did, it would be a different element (thallium, atomic number 81, or bismuth, ...
How is an atom different from an element? How is a water molecule like a magnet? What attracts the atoms in an ionic bond? How are isotopes different from stable atoms? Explain how to determine how and if atoms have valence electrons. ...
[translate] aThe atomic mass of an element indicates how heavy, on average, an atom of an element is when compared to an atom of another element 元素的原子质量表明多么重,平均,元素的原子是,当与另一个元素时原子比较[translate]
What are the 5 parts of an atom? What Are The 5 Parts Of An Atom Protons. Neutrons. electrons. What is the smallest thing in the universe? Protons and neutrons can be further broken down: they're both made up of things called “quarks.” As far as we can tell, quarks can't be ...
• The different manifestations of the same atom that vary only in neutron number are called isotopes. The proton-plus-neutron number of a given isotope is given using a left superscript next to the element symbol. This atom could therefore be represented by 18 proton balls (pink) and 22 ...
atoms are the basic unit of particles. An atom contains a nucleus (consisting protons and neutrons) and some electrons moving around the nucleus. If o atoms have the same number of protons they are the same element. There are about 117 elements have been found or synthesized. ...
An atom is considered as the smallest particle of a chemical element that is existing in nature. All substances are made up of either neutral atoms or ionized atoms. The atoms of all elements have three subatomic particles i.e., electrons, protons, and neutrons. ...