Flashcards
Sem título
Flashcards do conjunto (10)
- 1The atoms in an element are:All the same type
- 2An atom consists of:A nucleus surrounded by electrons
- 3What is the correct chemical symbol for sodium?Na
- 4What are the groups in the periodic table?A column of similar elements
- 5How many protons, neutrons and electrons are there in a 27Al13 atom13 protons, 14 neutrons and 13 electrons
- 6Which of the following does the nucleus contain?protons and neutrons
- 7Which of the following statements is correct?Protons are positively charged and electrons are negatively charged.
- 8What is the atomic number of an atom?The number of protons it contains.
- 9Which of the following statements is true of an atom?The number of protons is always equal to the number of electrons.
- 10Which electronic structure is correct for an element with 17 electrons?2,8,7
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- FlashCards sobre Sem título, criado por Kiera Ashford em 09-04-2017.
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- Kiera Ashford
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