Chemistry, 30.06.2019 21:30 tangia

How many covalent bonds are predicted for each atom? atoms: br, h, cl, ge, s, as, b, si

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Answer from: zackarygonzalez1028

Explanation:

Covalent bonds are defined as the bonds which are formed by the sharing of electrons between the atoms. They are usually formed by non-metals.

The number of covalent bonds are predicted by the number of valence electrons.

Elements belonging to Period 3 and above will form covalent bonds same as the number of valence electron because of the presence of d-orbitals.

Elements belonging to period 2 will form covalent bonds = (8 - number of valence electrons)

For the given elements:

Bromine is the 35th element which belong to period 4. The electronic configuration of $1s^22s^22p^63s^23p^63d^{10}4s^24p^5$

This element has 7 valence electrons and will form 7 covalent bonds.

Hydrogen is the 1st element which belong to period 1. The electronic configuration of 1s^1

This element has 1 valence electrons and will form 1 covalent bond.

Chlorine is the 17th element which belong to period 3. The electronic configuration of 1s^22s^22p^63s^23p^5

This element has 7 valence electrons and will form 7 covalent bonds.

Germanium is the 32nd element which belong to period 4. The electronic configuration of $1s^22s^22p^63s^23p^63d^{10}4s^24p^2$

This element has 4 valence electrons and will form 4 covalent bonds.

Sulfur is the 16th element which belong to period 3. The electronic configuration of 1s^22s^22p^63s^23p^4

This element has 6 valence electrons and will form 6 covalent bonds.

Arsenic is the 33rd element which belong to period 4. The electronic configuration of $1s^22s^22p^63s^23p^63d^{10}4s^24p^3$

This element has 5 valence electrons and will form 5 covalent bonds.

Boron is the 5th element which belong to period 2. The electronic configuration of 1s^22s^22p^1

This element has 3 valence electrons. It will form (8 - 3) = 5 covalent bonds.

Silicon is the 14th element which belong to period 3. The electronic configuration of 1s^22s^22p^63s^23p^2

This element has 4 valence electrons and will form 4 covalent bonds.

Answer from: Quest

your answer would be a. 12.5 kg

Answer from: Quest

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i

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