GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When atoms combine, they may gain, lose, or share:
A
protons
B
electrons
C
neutrons
D
nuclei
Explanation: 

Detailed explanation-1: -An atom will lose or gain electrons to try and fill its outer shell. Ions = charged particles which are formed in ionic bonds. Chemical bond where electrons are shared. Each atom fills its outer energy level together, at the same time.

Detailed explanation-2: -Many atoms become stable when their valence shell is filled with electrons or when they satisfy the octet rule (by having eight valence electrons). If atoms don’t have this arrangement, they’ll “want” to reach it by gaining, losing, or sharing electrons via bonds.

Detailed explanation-3: -In ionic compounds, electrons are completely transferred from one atom to another so that a cation-positively charged ion-and an anion-negatively charged ion-form. The strong electrostatic attraction between adjacent cations and anions is known as an ionic bond.

Detailed explanation-4: -An ionic bond can be formed after two or more atoms loss or gain electrons to form an ion. Ionic bonds occur between metals, losing electrons, and nonmetals, gaining electrons. Ions with opposite charges will attract one another creating an ionic bond.

Detailed explanation-5: -A molecule is formed when two or more atoms chemically bind together. At times, all of the atoms are from the same element. Three oxygen atoms, for example, bind together to form an ozone molecule . A compound is a molecule made up of atoms from two or more distinct elements.

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