SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Be
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Br
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B
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34
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4
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Detailed explanation-1: -Beryllium is a chemical element with symbol Be and atomic number 4. Classified as an alkaline earth metal, Beryllium is a solid at room temperature.
Detailed explanation-2: -The element with atomic number 4 is beryllium, which means each atom of beryllium has 4 protons. A stable atom would have 4 neutrons and 4 electrons. Varying the number of neutrons changes the isotope of beryllium, while varying the number of electrons can make beryllium ions. The symbol for atomic number 4 is Be.
Detailed explanation-3: -Beryllium is a chemical element with the symbol Be and atomic number 4. It is a steel-gray, strong, lightweight and brittle alkaline earth metal. It is a divalent element that occurs naturally only in combination with other elements to form minerals.