If an element 'X' there are 7 electrons present in its outermost orbit , then it is a ?
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5
Answer:
Hydrogen, lithium, sodium, and potassium atoms all have a single electron in their outermost shell. Fluorine, chlorine, bromine, and iodine atoms all have 7. ... Oxygen and sulfur, with their 6 outermost electrons react with hydrogen to form water (H2O) and hydrogen sulfide (H2S).
Explanation:
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1
Answer:halogens
Explanation:
Because halogens like fluorine, chlorine have electronic configuration
2 7, 2 8 7 respectively
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