All categories

3 years ago

How many total electrons would lithium have if its electron configuration is 1s2 2s1?

Chemistry

1 answer:

Solnce55 [7]3 years ago

5 0

Answer:

How many electrons are there in the lithium ion?

The battery goes on and on and on.

Each element have an electron configuration in depending of the principle (Hund’s rule , etc).

So by their atomic number tend to indicate the number of protons that are equal in a number of electrons.

So the atomic number indicate the numbers of electrons.

Atoms have direct stability as such lithium tend to be located in group 1A and period 2.

Lithium have the atomic number of 3.

So naturally their protons/number of electrons are 3.

The electron configuration is (LI) 1s² 2s¹ or [He] 2s¹.

To archive stability as any noble gas element HE , Then the lithium will form an electron to form a Lithium ion which is Cation LI+.

So by it the lithium ion had 2 electrons.

You might be interested in

The empirical formula for a compound is CH2. If n is a whole number, which shows a correct relationship between the molecular fo

GaryK [48]

Answer:

D)subscript of C in molecular formula = n x subscript of C in empirical formula

Explanation:

THIS IS THE COMPLETE QUESTION BELOW;

.The empirical formula for a compound is CH2. If n is a whole number, which shows a correct relationship between the molecular formula and the empirical formula? a) empirical formula mass / molecular mass = n B) molecular mass = element mass / empirical formula mass ´ 100 c) subscript of H in empirical formula = 2 subscript of H in molecular formula D) subscript of C in molecular formula = n subscript of C in empirical formula

An empirical formula can be regarded as "shorten form" of a molecular formula. Instance of this is

A compounds CH4, C2H8, C4H12... with empirical formula of CH4. In this case a constant "n" represent the difference that exist between empirical formula and molecular formula, "n" which is a whole number, molecular formula is the numerator.

Therefore, subscript of C in molecular formula = n x subscript of C in empirical formula

8 0

3 years ago

I WILL RATE BRAINLIEST!!!

Naddik [55]

the answer:
The net ionic equation,
H3PO4 (aq) + 3 OH− (aq)------- PO4−3 (aq) + 3 H2O (l),

 H3PO4 is a strong acid, (presence of hydrogen H)
OH- is a strong base, (presence of OH-)

so the true answer is strong acid-strong base

4 0

3 years ago

Which aqueous solution will have the highest boiling point temperature? A. 0.100 molal NiBr2(aq) B. 0.250 molal CH3OH(aq) C. 0.1

zaharov [31]

Answer: 0.150 m $Na_2SO_4(aq)$ will have highest boiling point.

Explanation:

Formula used for Elevation in boiling point :

$\Delta T_b=i\times k_b\times m$

where

$\Delta T_b=T_b-T^o_b$ = elevation in boiling point

[tex[k_b[/tex] = boiling point constant

m = molality

i = Van't Hoff factor

A) 0.100 m $NiBr_2$

i = 3 as $NiBr_2\rightarrrow Ni^{2+}+2Br^-$

concentration will be $3\times 0.100=0.300$

B) 0.250 m $CH_3OH$

i = 1 as $CH_3OH$ is a non electrolyte

concentration will be $1\times 0.250=0.250$

C) 0.100 molal $MgSO_4(aq)$

i = 2 as $MgSO_4\rightarrrow Mg^{2+}+SO_4^{2-}$

concentration will be $2\times 0.100=0.200$

D. 0.150 molal $Na_2SO_4(aq)$

i = 3 as $Na_2SO_4\rightarrrow 2Na^{+}+SO_4^{2-}$

concentration will be $3\times 0.150=0.450$

E. 0.150 molal $NH_4NO_3(aq)$

i = 2 as $NH_4NO_3\rightarrrow NH_4^{+}+NO_3^{-}$

concentration will be $2\times 0.150=0.300$

The solution having the highest concentration of ions will have the highest boiling point and thus 0.150 m $Na_2SO_4(aq)$ will have highest boiling point.

8 0

3 years ago

Most bacteria are ___ as they are unable to make their own food

VikaD [51]

Answer:

HETEROTROPHIC

Explanation:

Based on nutrition, organisms are classified into autotrophic and heterotrophic. Autotrophic organisms are organisms that are capable of making their own food using either light source (photosynthesis) e.g plants or chemical source (chemosynthesis) e.g some bacteria.

Contrarily, HETEROTROPHIC organisms are those that are unable to synthesize their own food themselves, hence, they rely on other organisms for their energy source. Types of heterotrophism include; saprophytism, predation etc. Most bacteria falls under this heterotrophic category because they are unable to make their own food.

4 0

3 years ago

What two characteristics of Earth allow liquid water to exist?

Brut [27]

Answer:

1. The greenhouse effect

2. sufficient pressure and temperature

Hope this helps!☻

5 0

4 years ago