12. Are proton, neutron, electron, and atom charged? If yes, what kind of charge
ID: 274026 • Letter: 1
Question
12. Are proton, neutron, electron, and atom charged? If yes, what kind of charge does each carry? 13. What is atomic number? 14. Atoms with the same belong to the same element 15. If an atom's atomic number is 5, neutron number is 6, and electron number is 5, what is the atomic mass? 16. If the atomic mass is 50 and neutron number is 26, how many electrons does this atom have? 17. What are isotopes? 18. Which of the following are isotopes? Atom | Atomic # | Atomic mass 17 16 15 16 35 32 19. If an atom's atomic number is 12, how many electrons are in the valence shell? 20. Out of the following elements, which one is least reactive? A) atomic number 15 B) atomic number 16 C) atomic number 17 D) atomic number 18 21. When an atom loses electrons, it turns into a charged when an charged atom gains clectrons, it turns into a 22. Ions are hydro 23. The attraction between cations and anions is called 24. Covalent bond forms byelectrons between atoms. Equal sharing forms bond covalent bond, unequal sharing forms covalent bond. 25. Nonpolar molecules such as respiratory gasesandare hydro polar molecules such as are hydroil 26. Which of the following molecules has hydrogen bond? CH4 DNA-.02 CO2 27. Define molecules 28 Define compounds. 29. List the properties of waterExplanation / Answer
12..proton has postive charge, electron has negative charge and neutron, atom has neutral charges.
13..atomic number means number of proton in nucleus
14..atoms with same no of proton belong to same element
15atomic mass is no of neutrons + no protons. Here total 5 electron are present which means 5 proton should be there so total will be 5+6 =11 atomic mass
16.24 electron should be present
17.Isotopes are variant of particular chemical element which difffer in there neutron number
18.Here A B C are isotopes
19.2 electrons will be in valance shell
20.d. With atomic number 18
21.when atom loses electron it carries positive charge
And when it gains it turns into negative charge
22.
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