Magnesium has 12 protons and electrons. When charged, it gains 2 electrons. Which symbol represents the charged magnesium (Mg) ion? ____ Calcium has 20 protons and electrons. When charged, it receive 3 electrons. Which symbol represents the charged calcium (Ca) ion?____ Magnesium has 12 protons and electrons. When charged, it give up 2 electrons. Which symbol represents the charged magnesium (Mg) ion?____ Calcium has 20 protons and electrons. When charged, it loses 3 electrons. Which symbol represents the charged calcium (Ca) ion? ____ Sodium has 11 protons and electrons. When charged, it loses 5 electrons. Which symbol represents the charged sodium (Na) ion?____ Which of the following has a negative charge?____ Hydrogen atom has just one ............. ____ in its nucleus An atom gives up an electron, it takes on a ................ ____ charge An atom receive an electron, it takes on a ............ ____ charge K+ represents a positively charged potassium atom, an atom that has ............. given up one of its electrons.____ K- represents a negatively charged potassium atom, an atom that has ............. ____ one of its electrons. In a neutral atom, the number of _____ equals the number of______ . ____ The atomic number for an atom containing 20 protons, 21 neutrons, and electrons is…….. ____

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