Chemistry, 25.10.2021 22:20 kenziedil2637

TRY IT Naming lonic Compounds with Polyatomic lons Name
Formula and charge
Identify the correct name for each compound.
Please use the periodic table that has been
provided for your use.
Ammonium
NHA
NaOH:
Hydroxide
OH-
CN-
CaSO4
Cyanide
Hydrogen carbonate
(bicarbonate)
HCO3
NH4CN:
Nitrate
Al2(SO4)3:
Carbonate
NO3
CO32-
SO 2-
DONE
Sulfate
Phosphate
PO,3-
Tut
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Activity

TRY IT Naming lonic Compounds with Polyatomic lons

Name
Formula and charge
Identify the correct n

Answers: 2

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Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Answer from: Quest

You can still be friends with each other. you don't have to date since he likes someone else. just stick to being friends for now

Answer from: Quest

What is the gold assay

Answer from: Quest

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5 m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.

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TRY IT Naming lonic Compounds with Polyatomic lons Name
Formula and charge
Identify th...