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3 years ago

Which of the following statements about subatomic particles best characterizes protons?

1 answer:

3 0

Lets get this straight:-

Protons → Positive charge, found in nucleus, heavy

Now, the only one we see that seems to be correct is A) positive charge, heavy, found in the nucleus of an atom

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Which carbon skeleton represents an ether?<br><br> (gradpoint)

sineoko [7]

The present carbon skeleton in an ether is C-C-C-O-C-C-C because ethers conatins C-O-C as functional group

7 0

3 years ago

Read 2 more answers

3. Given the reaction:

sesenic [268]

Answer:

Attached

Explanation:

3 0

2 years ago

How many grams of Mg(NO3)2 would be produced? please show how you got the answer

Len [333]

Answer:

148 grams of relative atomic mass

Explanation:

magnesium atomic mass : 24

nitrogen : 14

oxygen : 16

24 × 1

14 × 1 × 2

16 × 3 × 2

24 + 28 + 80 = 148 grams

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3 years ago

"the number of quantum numbers needed to describe the state of an atomic electron is"

Blababa [14]

To completely describe an electron in an atom, four quantum numbers are needed: energy (n), angular momentum (ℓ), magnetic moment (mℓ), and spin (ms). The first quantum number describes the electron shell, or energy level, of an atom.

5 0

3 years ago

The shape (or geometry) of the amide anion, NH2-, the number of lone pairs on nitrogen, and the hybridization at nitrogen are, r

PtichkaEL [24]

Answer : The correct option is, (B) bent, 2, and $sp^3$

Explanation :

Formula used :

$\text{Number of electron pair}=\frac{1}{2}[V+N-C+A]$

where,

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

The given molecule is, $NH_2^-$

$\text{Number of electrons}=\frac{1}{2}\times [5+2+1]=4$

Number of bond pair = 2

Number of lone pair = 2

The total number of electron pair are 4 that means the hybridization will be $sp^3$ and the electronic geometry of the molecule will be tetrahedral.

But as there are 2 atoms around the central oxygen atom, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent or angular.

Hence, the correct option is, (B) bent, 2, and $sp^3$

3 0

3 years ago