3 years ago

A. What type of elements are found in each group?

1 answer:

7 0

Answer:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

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3 years ago

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Drupady [299]

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Calcium is the 20th element. It has 20 electrons in it's neutral state. The electronic configuration is given as;

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3 years ago