Biology, 19.11.2019 03:31 acsmelis

What is the difference between the number of electrons in an atom of selenium, se, and the number of electrons in an atom of aluminum, al?

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Answer from: fanta47

The element selenium has the atomic number of 34 while aluminium has atomic number of 13. The electronic configuration of selenium is 2, 8,18, 6 while that of aluminium is 2, 8, 3. This means that, selenium has six electrons in its outermost shell, this allows selenium to have variety of valence numbers. Aluminium on the other hand has only three electrons in its outermost shell. Aluminium will be more ready than selenium to give away its valence electrons in order to attain the octet form. Selenium belongs to the group VIA while aluminium belongs to group IIIA. The group that an element belongs to determine the number of electron in its outermost shell.

Answer from: mianelson367

Electrons are the sub-atomic particles of an atom. It has a negative charge and revolves around the positively charged nucleus.

The difference in the electrons of selenium and aluminum is that Se has 6 electrons in the outermost shell and Al has 3 in the outermost shell.

The difference in the electrons of Selenium and Aluminum is:

Selenium is the chemical element with the symbol Se and atomic number 34. The electronic configuration of Se is 2, 8,18, 6. The number of electrons in the valence shell of the selenium is 6. Selenium belongs to the group VIA. Aluminum is a chemical element with atomic number 13. The electronic configuration of the element is 2,8, 3. The number of electrons in the valence shell of aluminum is 3. Aluminum belongs to group IIIA.

Therefore, the number of electrons in the valence shell is different in Se and Al. Se has 6, while Al has 3 valence electrons.

To know more about elements and electrons, refer to the following link:

link

Answer from: Quest

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

Answer from: Quest

the cell is the smallest structural and functional unit of living organisms, which can exist on its own. therefore, it is sometimes called the building block of life. some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.

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What is the difference between the number of electrons in an atom of selenium, se, and the number of...