All categories

3 years ago

1. Which out of the following elements has the lowest electronegativity: Lithium, Beryllium, Magnesium, Sodium

Chemistry

1 answer:

lidiya [134]3 years ago

6 0

The element Sodium (Na) has a low electronegativity of the following elements.
The element Beryllium (Be) has the least metallic character.
The element Sodium (Na) has the largest atom.

<u>Explanation:</u>

Sodium (Na) which is a delicate, shimmering white, profoundly responsive soluble base metal loses an electron to a chlorine iota since it has seven electrons in its valence shell.
It needs one more electron to turn into a steady molecule. It has the most reduced electronegativity of the given components.
Beryllium (Be) is a light, silver-gray, relatively soft metal that is strong but brittle has the least metallic character of the given elements.
Since from left to right in a period, Metallic character decreases while nonmetallic character increases from top to bottom.
Sodium(Na) is the largest atom among the given elements since Atomic size decreases across a period from left to right and increases from top to bottom.

You might be interested in

Question 23 (3 points)

Mice21 [21]

Answer:

<h2>The answer is 3.0 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density} \\$

From the question

mass of aluminum = 8.1 g

density = 2.7 g/mL

It's volume is

$volume = \frac{8.1}{2.7} \\$

We have the final answer as

Hope this helps you

3 0

3 years ago

1. How is the genome like a stack of papers?

Ivanshal [37]

Answer:

Except for mature red blood cells, all human cells contain a complete genome. DNA in the human genome is arranged into 24 distinct chromosomes—physically separate molecules that range in length from about 50 mil- lion to 250 million base pairs.

3 0

2 years ago

Read 2 more answers

Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon w

IRINA_888 [86]

A) Magnesium + Chlorine -> Magnesium chloride ( Mg + Cl2 -> MgCl2)

b) Potassium + Oxygen -> Potassium oxide
( 2K + O2 -> K2O )

c) Sodium + Bromine -> Sodium bromide
( 2Na + Br2 -> 2NaBr)

d) Carbon + Oxygen -> Carbon dioxide
( C + O2 -> CO2 ) This reaction occurs when heated.

4 0

3 years ago

When aqueous solutions of calcium bromide and potassium carbonate are combined, solid calcium carbonate and a solution of potass

ladessa [460]

$K_2CO_3 + CaBr_2$ → $KBr + CaCO_3$ is the net ionic equation for this reaction.

<h3>What is an ionic equation?</h3>

An ionic equation is a synthetic equation where electrolytes are composed as separated particles.

$K_2CO_3 + CaBr_2$ → $KBr + CaCO_3$ is the net ionic equation for this reaction.

A balanced ionic equation. shows the reacting ions. in a chemical reaction. These equations can be used to represent what happens in precipitation reactions.

Learn more about ionic equation here:

brainly.com/question/16225321

#SPJ1

5 0

2 years ago

10 points Which of these is the best example of heat transfer by radiation? *

insens350 [35]

Answer:

a) A satellite is warmed by sunlight.

Explanation:

Heat transfer by radiation mostly involves heat gain or heat loss from the Sun. In this case, Option A is the only option where sunlight is involved so it is the best example of heat transfer by radiation.

3 0

3 years ago