SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which element in period four is a metalloid?
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Silicon
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Gallium
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Arsenic
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Titanium
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Explanation:
Detailed explanation-1: -Arsenic is a chemical element which is placed in the 15th group and 4th period in the periodic table. Symbol of the arsenic element is As. It is a metalloid element with the atomic number 33.
Detailed explanation-2: -Arsenic is classified chemically as a metalloid, having both properties of a metal and a nonmetal; however, it is frequently referred to as a metal. Elemental arsenic (sometimes referred to as metallic arsenic) is a steel grey solid material.
Detailed explanation-3: -The period 4 transition metals are scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), and zinc (Zn).
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