1. Periodicity of Hydra Acids
(a) Acidic character of hydra acid increases from left to right in a period.
(b) Acidic character of hydra acid increases from top to bottom in a group.
2. Periodicity of Oxy Acids
(a) Acidic character of oxy acid increases from left to right in a period.
(b) Acidic character of oxy acid decreases from top to bottom in a group.
3. Acid-Base Character of Oxides
- On moving across a period, the basic character of oxides gradually decreases, and the acidic character increases.
- The stability of oxides decreases across a period.
Note:
- Oxides of Element M in H2O produce MOH.
- If the electronegativity difference of M and O is greater than that of H and O in H2O then MOH is acidic due to the formation of H3O+.
- If the electronegativity difference of M and O in MOH is lesser than that of O and H in H2O then MOH is basic due to the formation of OH–.
- Oxides of the following elements are amphoteric.
Zn, Al, Be, Ga, Pb, Sn, As, Sb, Bi, In, Ge
- H2O is amphoteric (also called amphiprotic)
- BeO, Al2O3, SnO2, PbO2 …………… are amphoteric since they form salts with acid as well as with base.
- Oxides are acidic if they react with base.
- Oxides are basic if they react with acid.
https://mexstarpharma.online/# mexican drugstore online
http://mexstarpharma.com/# mexican pharmaceuticals online
https://mexstarpharma.com/# mexico drug stores pharmacies
https://mexstarpharma.com/# mexico pharmacies prescription drugs
https://easyrxindia.com/# indian pharmacy paypal
http://easyrxindia.com/# reputable indian online pharmacy
http://easyrxindia.com/# india online pharmacy
bonus veren slot siteleri: canl? slot siteleri – deneme veren slot siteleri
sweet bonanza taktik: sweet bonanza 90 tl – sweet bonanza bahis
en guvenilir slot siteleri: en guvenilir slot siteleri – deneme bonusu veren siteler
I am a casino online that has shared my information on how to make money online, This is not a scam but my knowledge of how to play.
https://main7.top/crazy/
en guvenilir slot siteleri: slot kumar siteleri – bonus veren casino slot siteleri
http://sweetbonanza.network/# sweet bonanza yasal site
2024 en iyi slot siteleri: en iyi slot siteleri – slot siteleri 2024
http://slotsiteleri.bid/# oyun siteleri slot
slot kumar siteleri: deneme bonusu veren siteler – slot siteleri 2024
guvenilir slot siteleri 2024: slot kumar siteleri – slot oyunlar? siteleri
https://denemebonusuverensiteler.win/# deneme bonusu veren siteler
https://denemebonusuverensiteler.win/# bonus veren siteler
https://1xbet.contact/# зеркало 1хбет
1win официальный сайт [url=https://1win.directory/#]ван вин[/url] 1win официальный сайт
pin up: pin up казино – pin up casino
https://pin-up.diy/# пин ап зеркало
1xbet: 1xbet официальный сайт – 1xbet зеркало рабочее на сегодня
пин ап казино вход: pin up – пинап казино
https://1win.directory/# 1win зеркало
1win зеркало: 1вин – 1win зеркало
https://1xbet.contact/# 1xbet скачать
1xbet зеркало рабочее на сегодня: 1хбет официальный сайт – 1хбет зеркало
пинап казино: пин ап вход – пин ап казино
https://vavada.auction/# вавада казино
казино вавада: вавада – казино вавада