Question

4. The group of metals which do not react with oxygen: (1)
a. All of these
b. Na, Cs
c. Au, Ag
d. Pt, Cu​

Answer 1

Answer:Au and Ag

Explanation: these are the least reactive metals

Answer 2

Au, Ag

• Silver is a white , soft , lustrous metal . It belongs to the period number 5 of the periodic table . Gold is a bright yellow , lustrous metal . It belongs to the period number 6 in the periodic table .
• Both of the metals occur naturally to elemental form .
• Both silver and gold are classified as transition metals .
• Silver and gold are solid at room temperature .
• Both are malleable , ductile , and conducting elements .
• They both belong to the group number 17 .
• Silver has the molecular formula Ag as its Latin name is Argentum and gold has the molecular formula Au because of its Latin name Aurum .
• Both are classified as precious .

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