Question

Name the elements in the attachment.​

Answer 1

Explanation:

d.Potassium has a density of 0.862 g/cm3 while sodium has a density of 0.971 g/cm3. All of the other metals on the periodic table are denser than water. While lithium, potassium, and sodium are all light enough to float on water, they are also highly reactive.

e.These are beryllium(Be), magnesium(Mg), calcium(Ca), strontium (Sr), barium( Ba) and Radium( Ra). It is a group or family of alkaline earth metals. All these elements have two electrons in their valence shell, and thereby ,are divalent.

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Answer 2

Answer:

a) mercury Hg

b)

c)nitrogen

d)sodium

e)magnesium