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Flashcards do conjunto (7)
- 1Why are elements neutral?Atoms are neutral because they have the same number of protons and electrons which cancel each other out.
- 2What is an isotope?Isotopes are atoms of an element with a normal number of neutrons. Isotopes have the same atomic number, but different mass numbers. The different isotopes have identical chemical properties.
- 3What is the electronic configuration of Li?3 electrons
2,1
very reactive - 4What is the atomic number of Oxygen?The atomic number of Oxygen is 8.
- 5What does the group number on the periodic table tell you?The group number on the periodic table tells you the amount of electrons.
- 6What is an ionic bond?An ionic bond is a bond between a positive metal ion and a negative non-metal ion. There is a strong electrostatic force of attraction between oppositely charged ions.
- 7What does electrostatic mean?Electrostatic is an attraction between a positive and a negative
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- FlashCards sobre Sem título, criado por millie groom em 14-11-2017.
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