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Tomtit [17]
3 years ago
12

Which of the following best explains the trend in ionization energy across a period?

Chemistry
2 answers:
Alina [70]3 years ago
4 0

A) It decreases because the distance between the nucleus and outermost shell increases

Alenkinab [10]3 years ago
4 0

Answer: It increases because the outermost electrons are attracted more strongly by protons.

Explanation:

Ionization energy is the energy required to remove the most loosely bound electron from a gaseous atom. Metals have low ionization energy as they tend to attain stable configuration by losing the valence electrons.

The size of an atom decreases as we move across the period because the electrons get added to the same shell and the nuclear charge keeps on increasing. Thus the electrons get more tightly held by the nucleus.

As, the size of an element decreases, the valence electrons come near to the nucleus. So, the attraction between the nucleus and the shared pair of electrons increases and thus ionization energy increases.

Hence, the correct statement is It increases because the outermost electrons are attracted more strongly by protons.

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Pickles and lemons have a sour taste. what types of substances are in pickles to give them this sour taste
postnew [5]
The taste of Acid is Sour, that of Base is Bitter and salt is salty. So, Pickle and Lemons give sour taste due to presence of Acids. The sour taste of Lemon is due to presence of Citric Acid in it. While the sour taste of Pickle is due to presence of Vinegar (5% Acetic Acid Solution). Vinegar is mainly used to prevent the Pickle from Bacterial Attack.
6 0
3 years ago
What mass of oxygen is needed to burn 4g of hydrogen, given the equation below
aleksandrvk [35]

32g of oxygen is required to burn 4g of hydrogen.

Define molecular mass.

A specific molecule's mass is expressed in daltons and is known as the molecular mass (m) (Da or u). Due to the varying isotopes of an element that they contain, multiple molecules of the same substance can have distinct molecular weights.

The total atomic mass of every atom in a molecule, calculated using a scale with hydrogen, carbon, nitrogen, and oxygen having atomic masses of 1, 12, 14, and 16, respectively. For instance, water has a molecular mass of 18 (2 + 16), which consists of two hydrogen atoms and one oxygen atom. known also as molecular weight.

In ,2H2+O2-----> 2H2O

H 2 molecules have a mass of 2 g/mol.

The molecular weight of oxygen is 32 g/mol.

When the chemical equation is balanced,

To totally react, 32 g of oxygen are needed for every 22=4 g of hydrogen.

To know more about molecular mass use link below:

brainly.com/question/21334167

#SPJ1

7 0
1 year ago
What does visible light include?
Hoochie [10]
I believe visible light is made from photons
4 0
3 years ago
Plz help me it a timed test
Shtirlitz [24]

Answer:

B

Explanation:

6 0
3 years ago
------------------------------------------------
zavuch27 [327]

Answer:

what would u like me to do on this?

Explanation:

do you have a tablel of elements? if not then look at on online and search them all.

5 0
3 years ago
Read 2 more answers
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