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3 years ago

Which of these elements reacts rapidly when dropped in water?

Chemistry

2 answers:

seraphim [82]3 years ago

8 0

Technically it's grp 1 elements...the answer is ribidium Rb

vazorg [7]3 years ago

5 0

Answer : The correct option is, (a) rubidium (Rb)

Explanation :

The general trend of the reactivity of the metal is,

The reactivity of the metals increases as we go down in the periodic table and the reactivity of the metals decreases as we go from left to right in the periodic table.

Therefore, the reactivity of metal in decreasing order will be,

Rb > Mg > Co > Cd > Ar

As per question, when the given elements dropped in water then the rubidium (Rb) is element which is most reactive that reacts rapidly with the water.

Hence, the element reacts rapidly with water is, rubidium (Rb).

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Irina-Kira [14]

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3 years ago

15 grams of sodium reacts with a certain amount of chlorine to yield 37 grams of sodium chloride, as shown below.

ale4655 [162]

Answer: 22g of chlorine would be needed to carry out this synthesis reaction

Explanation:

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$Na+Cl\rightarrow NaCl$

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15 grams of sodium reacts with 22 grams of chlorine to yield 37 grams of sodium chloride. Thus 22g of chlorine would be needed to carry out this synthesis reaction.

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Explanation:

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2 years ago

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Hello

I am Parth

Can we became friends

and ur intro plz

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