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3 years ago

Explain in terns of atomic structure why barium has a lower first ionization energy than magnesium.

Chemistry

1 answer:

Sonja [21]3 years ago

3 0

Answer:

Barium has a greater radius than magnesium

Explanation:

Barium and magnesium are two elements which belong to the same group, group 2A. This means that the two elements have two valence electrons in their outer shell.

The difference is, however, since barium is lower in group than magnesium, it has more electron shells than magnesium and, therefore, its radius is greater. The attraction force between the nucleus and the valence electrons in barium is lower as a result, as force is inversely proportional to distance. Hence, a lower amount of energy is required to remove the valence electrons from barium.

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if eleanor starts with 25.00 ml of a weak acid (the concentration is 0.1084 m), then how many ml of 0.1817 m naoh has to be adde

polet [3.4K]

Answer:

14.91 mL

Explanation:

Assuming the weak acid is monoprotic, we can solve this problem using the equation:

C₁V₁=C₂V₂

Where subscript 1 stands for the Volume and Concentration of the weak acid, while 2 stands for those of NaOH.

We input the data:

25.00 mL * 0.1084 M = 0.1817 M * V₂

And solve for V₂:

V₂ = 14.91 mL

6 0

2 years ago

the _ of an element is the average mass of an element naturally occurring atom, or isotopes,taking into account the _ of each is

NARA [144]

Answer:

the atomic mass of an element is the average mass of an element naturally occurring atom, or isotopes, taking into account the percentage of each isotopes

Explanation:

The atomic mass of an element is obtained by obtaining the relative abundances (in percentages) of naturally occurring atoms and the masses of the isotopes. The atomic mass can also be defined as the sum of the protons and the neutrons in the nucleus of an element.

In the periodic table, the atomic mass is indicated below the symbol of each of the elements and is usually in the decimal form.

7 0

2 years ago

The chemical formula for baking soda is NaHCO. Does baking soda contain metallic or non-metallic elements? Which one is which?

Fed [463]

Answer:

Both metals and non metals.

Explanation:

The correct formula of baking soda is NaHCO₃,

An element is considered to be metal if it is able to give electron easily due to very low ionization energy.

A non metal is ready to accept electron easily due to high electron affinity.

In sodium bicarbonate :

Na: Sodium : metal

H : Hydrogen: non metal (although placed with first group, alkali metals, in the periodic table as it readily loses electron like metals)

C: Carbon: Non metal

O : Oxygen : Non metal.

So the compound contains both metals and non metals.

3 0

3 years ago

Because copper is a metal, it is what?

oksano4ka [1.4K]

Copper is a mineral and an element essential to our everyday lives. It is a major industrial metal because of its high ductility, malleability, thermal and electrical conductivity and resistance to corrosion. It is an essential nutrient in our daily diet. And, its antimicrobial property is becoming increasingly important to the prevention of infection. It ranks third after iron and aluminum in terms of quantities consumed in the USA.

6 0

2 years ago

Five ways you can recycle

Natasha_Volkova [10]

Answer:)

Top 5 Ways to Reuse and Recycle at Home
Repurpose Glass, Plastic and Cardboard Containers. ...
Designate a Kitchen Drawer for Plastic Bags. ...
Reuse your Home Delivered Newspaper. ...
Supply Artists with Creative Materials. ...
Convert Old Sheets, Towels and Clothing into Wash Rags.

Hope it helps you my dear friend:)
Plss mark me as brainliest:) thanks:)

6 0

2 years ago

Read 2 more answers