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IRINA_888 [86]
3 years ago
9

What are 1A, 3B, and 7A examples of on the periodic table?

Chemistry
2 answers:
shepuryov [24]3 years ago
6 0

Answer:

1A, 3B, and 7A are examples of group _ on the periodic table. ... Elements in group 2 are all called alkaline earth metals.

Explanation:

Hitman42 [59]3 years ago
3 0

Answer:

Groups

Explanation:

1 A, 3 B, and 7 A are examples of  group number on the periodic table

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Answer:

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Explanation:

The halogens are present in the P- block of periodic table. There are thirty five elements present in p-block. The halogens are present in group seventeen. Their are seven electrons are present in valance sheet. All halogens require one electron to complete the octet and form anion carry -1 charge.

Halogens include following elements:

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The halogens mostly form single bond with the other elements by gaining one electron and -1 charge. These are most reactive non-metals.

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Chlorine:

1. It is greenish-yellow irritating gas.

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1. It is present in solid form.

2. It is crystalline in nature.

3. It is very corrosive and has pungent odor.

4. It can not react with oxygen and nitrogen.

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