Question

Silicon

sodium
nitrogen
potassium

Use the periodic table to predict which element is nonmetallic AND a gas at room temperature.
A) nitrogen
B) potassium
C.)silicon
D) sodium​

Answer 1

Nitrogen is the element that is nonmetallic and a gas at room temperature among the given options.Thre correct option is a.

Step-by-step explanation:

The element that is nonmetallic and a gas at room temperature from the options provided is nitrogen. Elements like silicon, sodium, and potassium are solid at room temperature, with silicon and potassium being metals and sodium being a metalloid. Nitrogen, on the other hand, resides in group 15 of the periodic table, which indicates that it is a nonmetal. Additionally, nitrogen is known to be a diatomic gas under standard conditions (N2), making it the only correct choice for being a nonmetallic gas at room temperature.

Check Your Learning

When aluminum (Al) and carbon (C) react to form an ionic compound, aluminum tends to lose electrons to form a cation with a charge of 3+ (Al3+), while carbon gains four electrons to form an anion with a charge of 4- (C4-).

Answer 2

D)
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