4. Bromine is located at period 4, family 7A in the periodic table of
element. How many valence electrons does Br have?
A. 6
B. 7
C. 8
D. 4
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4. Bromine is located at period 4, family 7A in the periodic table of
element. How many valence electrons does Br have?
A. 6
B. 7
C. 8
D. 4
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Answer:
D. 4 po
Explenation
Sana makatulong
Answer:
B
Explanation:
seven valence electrons
The Group 7A elements have seven valence electrons in their highest-energy orbitals (ns2np5). This is one electron away from having a full octet of eight electrons, so these elements tend to form anions having -1 charges, known as halides: fluoride, F-; chloride, Cl-, bromide, Br-, and iodide, I-.
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