Question

How many valence electrons do the following atoms have ?

a-boron,
b-nitrogen,
c-oxygen,
d-fluorine

Answer 1

Boron has 3 valence electrons, nitrogen has 5, oxygen has 6, and fluorine has 7. These numbers mirror their respective positions in the periodic table, in groups 13, 15, 16, and 17.

Step-by-step explanation:

The number of valence electrons an atom has is determined by its position in the periodic table. For the elements you've asked about, the number of valence electrons is as follows:

• Boron (B, atomic number 5) is in group 13 of the periodic table and has 3 valence electrons.
• Nitrogen (N, atomic number 7) is in group 15 of the periodic table and has 5 valence electrons.
• Oxygen (O, atomic number 8) is in group 16 of the periodic table and has 6 valence electrons.
• Fluorine (F, atomic number 9) is in group 17 of the periodic table and has 7 valence electrons.

The valence electrons are the electrons in the outermost shell of an atom and they play a crucial role in chemical bonding and the properties of elements.