Write the name and symbol of the element from the description.
a. The atom having the smallest size.
b. The atom having the smallest atomic mass.
c. The most electronegative atom.
d. The noble gas with the smallest atomic radius.
e. The most reactive nonmetal.
Answer:
a. The atom with the smallest size is hydrogen.
The symbol of the hydrogen atom is 1H.
b. The atom with the smallest atomic mass is Hydrogen.
The symbol of the helium atom is 1H.
c. The most electronegative atom is fluorine because:
⇒ Fluorine (2,7) has the highest tendency to accept electron to achieve noble gas configuration (2,8).
⇒ As we know that more easily an atom accepts an electron, higher will be its electronegativity.
The symbol of the fluorine atom is 9F.
d. The noble gas with the smallest atomic radius is Helium.
The symbol of the hydrogen atom is 1H.
e. The most reactive non-metal is fluorine because:
⇒ Halogens are the most reactive non- metals in the periodic table.
⇒ Halogens (non-metals) have strong tendency to gain/accept electrons.
⇒ All the halogens need only one electrons to achieve noble gas configuration.
⇒ As we know that non-metallic character decreases down the group. Thus among halogens, fluorine is the most reactive non-metal.
The symbol of the fluorine atom is 9F.
