14 Questions
What is the atomic number of an element with 18 protons?
18
Which of the following pairs of elements are isobars?
Fluorine-19 and Sodium-19
What is the atomic mass of an element with 8 neutrons and 7 protons?
16.0 amu
Which of the following elements has the most stable isotope?
Carbon-12
What is the main component of the electron cloud in an atom?
Electrons
What determines the element's atomic number?
The number of protons
Which type of atomic bond occurs when atoms share electrons to create a stable electron configuration?
Covalent bonds
In an ionic bond, what happens to create a positive and negative ion?
Atoms lose or gain electrons
What is the central part of an atom that contains protons and neutrons?
Nucleus
What is the primary cause of the conductivity of metals?
The delocalized and freely moving electrons
How do isotopes of an element differ from each other?
They have different atomic masses but the same number of protons
What determines the chemical properties of an element?
The arrangement of valence electrons in the electron cloud
In the periodic table, elements in the same group have the same number of what type of electrons?
Valence electrons
What is responsible for holding atoms together in metallic bonds?
The electromagnetic force
Explore the fundamental components of an atom, including the nucleus, protons, neutrons, and their role in determining the atomic number and atomic mass. Learn about the central part of an atom and its significance in defining the characteristics of elements.
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