Question

an element with the atomic number 19 will most likely combine chemically with the helmet those atomic number is is first one 17 second 11 3rd 28 4th 39​

Answer 1

Answer:

The element with atomic number 19 will have the electronic configuration 1s

2

2s

2

2p

6

3s

2

3p

6

4s

1

. So, it has 1 valence electron. The element with atomic number 17 will have the electronic configuration 1s

2

2s

2

2p

6

3s

2

3p

5

. This element with atomic number 17 needs 1 electron to complete its octet whereas element with atomic number 19 has an extra electron. Hence, an element with atomic number 19 is most likely to combine with the element with atomic number 17.

Explanation:

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