Periodic Table of Elements
A Periodic Table is the arrangement of the elements in tabular form according to their properties so that similar elements fall within the same vertical column and dissimilar elements are separated.
To understand the behavior of compounds we need to understand the behavior of atoms. The elements are arranged in tabular form to rationalize diverse physical and chemical properties.
Mendeleev’s Periodic Law
- The periodic properties of elements are a periodic function of their increasing atomic weights.
- It had 8 groups (vertical columns) and 6 periods (horizontal rows)
Modern Periodic Law
- The periodic properties of elements are a periodic function of their increasing atomic numbers.
- The modern periodic table has 7 periods and 18 groups.
A repetition of properties is seen after 2, 8, 8, 18, 18, and 32 elements. The numbers 2, 8, 18, and 32 are called magic numbers.
Periodicity in Properties of Elements
Periodicity is the repetition of elements with similar properties after certain regular intervals when the elements are arranged in order of increasing atomic number.
The periodic repetition of properties is due to the recurrence of similar valence shell configurations after regular intervals.
You can check the summary on the periodicity of the elements in the periodic table here.
Short period and long period in the modern periodic table
- Periods 1, 2, and 3 have 2, 8, and 8 elements respectively, and are called short periods.
- Periods 4, 5, and 6 have 18, 18, and 32 elements respectively, and are called long periods.
Read more about the periodic table and elements here – https://www.youtube.com/watch?v=6nBkeoHNoLI
http://mexstarpharma.com/# mexico drug stores pharmacies
http://easyrxcanada.com/# canada online pharmacy
https://easyrxindia.com/# reputable indian online pharmacy
https://mexstarpharma.com/# purple pharmacy mexico price list
http://easyrxcanada.com/# canadian online drugstore
https://easyrxcanada.online/# canadian discount pharmacy
https://mexstarpharma.online/# purple pharmacy mexico price list
sweet bonanza: sweet bonanza mostbet – sweet bonanza slot demo
2024 en iyi slot siteleri: guvenilir slot siteleri – canl? slot siteleri
canl? slot siteleri: bonus veren casino slot siteleri – 2024 en iyi slot siteleri
slot siteleri guvenilir: yeni slot siteleri – oyun siteleri slot
http://denemebonusuverensiteler.win/# bahis siteleri
en iyi slot siteleri 2024: en cok kazandiran slot siteleri – deneme veren slot siteleri
http://slotsiteleri.bid/# slot casino siteleri
guvenilir slot siteleri 2024: bonus veren casino slot siteleri – bonus veren casino slot siteleri
https://denemebonusuverensiteler.win/# bahis siteleri
1вин зеркало: 1win официальный сайт – ван вин
vavada казино vavada online casino вавада зеркало
https://1win.directory/# 1win вход
1xbet официальный сайт: 1xbet зеркало – 1xbet скачать
1win зеркало: 1вин официальный сайт – 1вин зеркало
http://1win.directory/# 1вин сайт
https://pin-up.diy/# pin up казино
vavada зеркало: казино вавада – vavada казино
pin up casino: pin up casino – пин ап вход
https://vavada.auction/# вавада зеркало
зеркало 1хбет: зеркало 1хбет – 1xbet официальный сайт
Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?
first medicine online pharmacy store discount code: cooperative pharmacy store locator – provigil online pharmacy
cymbalta pharmacy coupons: ambien online us pharmacy – best indian online pharmacy
https://pharm24on.com/# fanda pharmacy hong kong cialis
hq pharmacy online 365
ventolin inhaler online pharmacy: topamax prices pharmacy – cheap generic viagra online pharmacy
renova cream online pharmacy: online pharmacy tylenol 3 – wegmans pharmacy free lipitor
buying percocet online pharmacy: specialty rx pharmacy – griseofulvin online pharmacy
best us online pharmacy: online pharmacy motilium – ultram online pharmacy
first medicine online pharmacy store discount code: great rx pharmacy – mutual of omaha rx pharmacy
online pharmacy review: online pharmacy delivery delhi – methotrexate online pharmacy
indian pharmacy: reputable indian pharmacies – indianpharmacy com
medication costs true rx pharmacy Viagra with Fluoxetine
Online medicine home delivery: top 10 online pharmacy in india – reputable indian pharmacies
https://pharmbig24.online/# pharmacy viagra france
pharmacy uk: allergy – usa online pharmacy store
reputable mexican pharmacies online: mexican rx online – reputable mexican pharmacies online
best india pharmacy: indianpharmacy com – indian pharmacies safe
indian pharmacy paypal best online pharmacy india Online medicine home delivery
http://indianpharmacy.company/# best india pharmacy
prozac overseas pharmacy: zovirax cream online pharmacy – best erectile dysfunction pills
physicians rx pharmacy: people’s pharmacy prilosec – asacol pharmacy card
pharmacy2u co uk viagra clomid uk pharmacy mirtazapine online pharmacy
http://pharmbig24.com/# finasteride uk pharmacy
buying from online mexican pharmacy: mexican border pharmacies shipping to usa – mexican online pharmacies prescription drugs
indian pharmacy top 10 pharmacies in india indianpharmacy com
top 10 online pharmacy in india: top 10 pharmacies in india – п»їlegitimate online pharmacies india
benicar hct online pharmacy: can you get viagra at the pharmacy – neoral pharmacy
http://pharmbig24.com/# pharmacy online 365 discount code
buy prescription drugs from india india pharmacy mail order Online medicine home delivery
omeprazole pharmacy only: cialis pharmacy online uk – percocet overseas pharmacy
indian pharmacies safe: top online pharmacy india – india online pharmacy
asda pharmacy viagra orlistat online pharmacy medical rx pharmacy
http://indianpharmacy.company/# indianpharmacy com
indian pharmacy: pharmacy website india – india pharmacy mail order
india online pharmacy: cheapest online pharmacy india – Online medicine home delivery
trusted online pharmacy pharmacy that sells rohypnol percocet overseas pharmacy
mexico pharmacies prescription drugs: mexican pharmaceuticals online – medicine in mexico pharmacies
http://mexicopharmacy.cheap/# mexico pharmacies prescription drugs
premarin pharmacy coupon med store pharmacy pharmacy warfarin clinic
river pharmacy baclofen: online pharmacy no prescription prednisone – sams pharmacy
mexico drug stores pharmacies: mexican drugstore online – medicine in mexico pharmacies
medication from mexico pharmacy best online pharmacies in mexico best online pharmacies in mexico
http://indianpharmacy.company/# indian pharmacy online
arimidex online pharmacy no prescription: viagra nz pharmacy – online pharmacy anabolic steroids
rx pharmacy glendale: wellness rx pharmacy – clozapine pharmacy registration
reputable indian pharmacies online pharmacy india online shopping pharmacy india
uk pharmacy: us pharmacy online viagra – cost of viagra in pharmacy
http://pharmbig24.com/# Apcalis SX
indianpharmacy com: indian pharmacy – online shopping pharmacy india
pharmacies in mexico that ship to usa mexican mail order pharmacies mexico drug stores pharmacies
mexican rx online: pharmacies in mexico that ship to usa – medication from mexico pharmacy
inhouse pharmacy accutane uk pharmacy discount drug store pharmacy
online pharmacy india: best india pharmacy – buy medicines online in india
mexican pharmaceuticals online: mexican online pharmacies prescription drugs – mexico pharmacies prescription drugs
casibom guncel giris adresi casibom giris casibom giris adresi
starzbet guncel giris starzbet starzbet guvenilir mi
https://betine.online/# betine guncel
https://betine.online/# betine giris
betine com guncel giris betine com guncel giris betine guncel giris
https://betine.online/# betine com guncel giris
casibom guncel giris casibom giris adresi casibom guncel giris adresi
https://gatesofolympusoyna.online/# gates of olympus turkce
farmacias online baratas comprar cialis online seguro farmacia online envГo gratis
farmacias online baratas: farmacia online envio gratis murcia – farmacia en casa online descuento
https://tadalafilo.bid/# farmacias online seguras
sildenafilo precio farmacia: sildenafilo – sildenafilo cinfa 25 mg precio
https://tadalafilo.bid/# farmacias direct
farmacias online seguras en espaГ±a
farmacias online seguras en espaГ±a mejores farmacias online farmacia barata
farmacia online 24 horas: mejores farmacias online – farmacia online barata y fiable
https://tadalafilo.bid/# farmacia online barcelona
farmacia online madrid
farmacia online barata y fiable: farmacias baratas online envio gratis – farmacia online madrid
https://sildenafilo.men/# viagra 100 mg precio en farmacias
farmacia online espaГ±a envГo internacional
http://farmaciait.men/# farmaci senza ricetta elenco
farmacie online affidabili
acquistare farmaci senza ricetta: Farmacie online sicure – acquistare farmaci senza ricetta
viagra 50 mg prezzo in farmacia: viagra senza prescrizione – viagra generico sandoz
п»їFarmacia online migliore farmacia online migliore farmacia online
esiste il viagra generico in farmacia: viagra generico – viagra originale in 24 ore contrassegno
comprare farmaci online all’estero Tadalafil generico migliore top farmacia online
siti sicuri per comprare viagra online: viagra senza ricetta – viagra subito
https://sildenafilit.pro/# viagra pfizer 25mg prezzo
acquisto farmaci con ricetta
farmacia online: farmacia online – top farmacia online
Farmacie online sicure Cialis generico controindicazioni farmacie online sicure
Thanks for sharing. I read many of your blog posts, cool, your blog is very good. https://accounts.binance.com/zh-TC/register?ref=VDVEQ78S
farmacie online affidabili Cialis generico 20 mg 8 compresse prezzo Farmacie on line spedizione gratuita
pillole per erezione in farmacia senza ricetta: acquisto viagra – cialis farmacia senza ricetta
п»їFarmacia online migliore comprare farmaci online con ricetta Farmacie on line spedizione gratuita
acquistare farmaci senza ricetta Ibuprofene 600 prezzo senza ricetta farmacie online affidabili
farmacia online senza ricetta: Farmacie on line spedizione gratuita – farmacie online autorizzate elenco
Farmacie online sicure Farmacie che vendono Cialis senza ricetta farmaci senza ricetta elenco
farmacia online senza ricetta BRUFEN 600 prezzo in farmacia farmacie online autorizzate elenco
viagra generico recensioni: viagra online in 2 giorni – viagra subito
п»їFarmacia online migliore: BRUFEN 600 prezzo in farmacia – acquistare farmaci senza ricetta
migliori farmacie online 2024 farmacia online migliore Farmacia online miglior prezzo
acquisto farmaci con ricetta Cialis generico controindicazioni farmacie online autorizzate elenco
comprare farmaci online con ricetta: Farmacia online migliore – acquistare farmaci senza ricetta
farmacia online piГ№ conveniente Farmacie che vendono Cialis senza ricetta Farmacia online piГ№ conveniente
rybelsus price: Semaglutide pharmacy price – Buy semaglutide pills
ventolin price australia: buy albuterol inhaler – buy ventolin canada
drug neurontin 200 mg: generic neurontin – prescription medication neurontin
prednisone pak: prednisone in india – cheap prednisone 20 mg
lasix medication: cheap lasix – lasix 40 mg
ventolin 4 mg tabs: Buy Albuterol inhaler online – buy ventolin online
ventolin hfa price
prednisone buy online nz: prednisone 20mg prices – how can i get prednisone
ventolin cost uk: Ventolin inhaler best price – buy ventolin inhaler
lasix pills: furosemide online – lasix 100 mg tablet
Your point of view caught my eye and was very interesting. Thanks. I have a question for you.
Viagra Pfizer sans ordonnance viagra sans ordonnance Viagra 100 mg sans ordonnance
trouver un mГ©dicament en pharmacie cialis prix pharmacie en ligne
vente de mГ©dicament en ligne Cialis sans ordonnance pas cher Achat mГ©dicament en ligne fiable
Viagra femme ou trouver: Acheter du Viagra sans ordonnance – Viagra gГ©nГ©rique pas cher livraison rapide