Untitled document - 1 An atom of the element chromium has an atomic number of 24 and a mass number of 52 How many electrons are in an uncharged atom of

Untitled document - 1 An atom of the element chromium has...

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1. An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom of chromium? 24 2. Henry Moseley was the first chemist to organize elements by atomic number. 3. The model below shows an atom of an element. 4. What is the atomic number of this atom? 8 Different ✔ ions isotopes compounds atoms of an element have different numbers of electrons. These models show the electron structures of two different nonmetal elements.
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Which element is likely more reactive, and why? Element 2 is more reactive because it does not have a full valence shell, so it will attract electrons. What best describes the states of nonmetals when they are at room temperature? Most nonmetals are gaseous, but some are liquid or solid. Where are alkaline earth metals found on the periodic table? Group 2 The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56.
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