
Fill-in-the-Blank
An atom consists of an atomic nucleus composed of positively charged_______ and uncharged _________. The number of positively charged particles in the nucleus determines the________ of the element. Orbiting around the nucleus are ________ that occupy confined spaces called __________. LO2

To review:
An atom consists of an atomic nucleus posed of positively charged ________ and uncharged _________. The number of positively charged particles in the nucleus determines the _______ of the element. Orbiting around the nucleus are _________ that occupy confined spaces are called ________.
Introduction:
Atom is the smallest unit of the element and every atom of that element carry all the chemical properties of that element. Atom also has its own composition and is composed of more smaller particles. Three Subatomic particles together constitute the structure of the atom.
Explanation of Solution
Atom is the basic structural unit of the element. It cannot be further separated into simpler substances and even cannot be converted into another substance just by performing the ordinary chemical reactions. Atoms are composed of even smaller particles; these are considered as subatomic particles. These are neutrons (n), protons (p+), and electrons (e-). Protons carry a positive charge, electrons carry a negative charge, and neutrons carry no charge. Atoms containan equal number of electrons and protons thus providing the overall neutral charge to the atom as their positive and negative charge cancel each other.
Electrons and protons together reside in the center of the atom that is called an atomic nucleus. The small electrons rotate in a continuous rapid motion around the atomic nucleus. The path at which the electrons rotates around the atomic nucleus is considered as the electron shell. Protons present in the nucleus denotes the atomic number
An atom consists of an atomic nucleus posed of positively charged protons and uncharged neutrons. The number of positively charged particles in the nucleus determines the atomic number of the element. Orbiting around the nucleus are electrons that occupy confined spaces called electron shells.
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Chapter 2 Solutions
EBK BIOLOGY
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