Draw a Bohr Model of Chlorine (Cl)

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Presentation transcript:

Draw a Bohr Model of Chlorine (Cl) Atomic Number: 17 (# of protons & therefore, same # of electrons) Atomic Mass: 35.453 (Atomic mass – Atomic number = # of neutrons) Halogen: Group 17 (# of valence electrons) Period 3 (# of energy levels) Identify the ionic charge

Nonmetals will gain electrons when forming compounds Nonmetals will gain electrons when forming compounds. They become negatively charged because there will be more electrons than protons. A negative ion will be formed. 17P = +17 18E= -18 17P 18N Cl ¯ 2 8 7 ionic charge: 1E= -1

Draw a Dot Diagram of Chlorine Need to know for a Dot Diagram: Element Symbol: Cl Group Number: 17 (# of valence electrons) Start drawing valence electrons at the top and go counterclockwise all the way around like compass ( N  W  S  E  N)

Cl Available spot for bonding!! Cl ¯

Draw a Bohr Model of Sodium (Na) Atomic Number: 11 (# of protons & therefore, same # of electrons) Atomic Mass: 22.99 (Atomic mass – Atomic number = # of neutrons) Alkali: Group 1 (# of valence electrons) Period 3 (# of energy levels) Identify the ionic charge

Metals will lose electrons when forming compounds Metals will lose electrons when forming compounds. They become positively charged because there will be more protons than electrons. A positive ion is formed. 11P 12N Na⁺ 2 8 1 11P = +11 10E = -10 ionic charge: 1P = +1

Draw a Dot Diagram of Sodium (Na) Need to know for a Dot Diagram: Element Symbol: Na Group Number: 1 (# of valence electrons)

Available electron for bonding!! Na Na⁺

Draw a Bohr Model of Oxygen (O) Atomic Number: 8 (# of protons & therefore, same # of electrons) Atomic Mass: 15.999 (Atomic mass – Atomic number = # of neutrons) Group 16 (# of valence electrons) Period 2 (# of energy levels) Identify the ionic charge

O 2- 8P 8N Atomic Number = # of protons & electrons Atomic mass – Atomic number = # of neutrons 16 – 8 = 8 neutrons O 2- 8P 8N 2 6

Draw a Dot Diagram of Oxygen (O) Need to know for a Dot Diagram: Element Symbol: O Group Number: 16 (# of valence electrons)

O Available spots for bonding!! O 2-

Draw a Bohr Model of Beryllium (Be) Atomic Number: 4 (# of protons & therefore, same # of electrons) Atomic Mass: 9.012 (Atomic mass – Atomic number = # of neutrons) Alkaline: Group 2 (# of valence electrons) Period 2 (# of energy levels) Identify the ionic charge

Be 2+ 4P 5N Atomic Number = # of protons & electrons Atomic mass – Atomic number = # of neutrons 9 – 4 = 5 neutrons Be 2+ 4P 5N 2 2

Draw a Dot Diagram of Beryllium (Be) Need to know for a Dot Diagram: Element Symbol: Be Group Number: 2 (# of valence electrons)

Available electrons for bonding!! Be Be 2+