Chapter4 chemistry Inorganic chemistry with 100% Correct Answers | Verified | Updated

Chapter4 chemistry Inorganic chemistry with 100% Correct Answers | Verified | Updated What happens when Group 2 metals react ? - answerWhen group 2 metals react they lose 2 ions and have a +2 charge What is the electronic configuration of all group 2 metals - answerAll group w metals end withe S2 What happens to the ionisation energy as move down group 2 metals. - answerAs you move diwn group 2 tye ionisation energy decreases because there is more shielding (from the positive nucleus and negative electrons ) so it is easier for elements tovremove the electron from its outer shell Note - we have an increase in the number of protons as we move down the group but this is overrriden by the protons What happens to the melting point as you go down Group 2. - answerAs you go down the group the melting points decreases. The metallic bonding weakens as the atomic size increases. The distance between the positive ions and delocalised electrons increases. Therefore the electrostatic attractive forces between the positive ions and the delocalised electrons weaken. What happens to the atomic radius as you go down Group 2 ? - answerThe Atomic radius increases down a group. As one goes down the group the atoms have more shells of electrons making the atom bigger What happens when Group 2 metals react with water ? - answerGroup 2 metals react with water to form bases - metal hydroxides are formed which are bases What is the equation when Group 2 metals react with water - answerG2(metal) + H2O = metal(OH) + H2 I.e Sr + H2O = Sr(OH) + H2 What happens to the reactivity as you go down Group 2 and why - answerIt increases - because the elements are larger so electrons are further from the nucleus so it's easier to remove the nucleus so there is more reactivity due to shielding What are some exceptions when it comes to to Group 2 elements reacting with water - answer- Be does not react with water at all because it's small and insoluble - Mg reacts slowly with cold water but vigorously with steam - When mg reacts with steam it produces magnesium oxide instead of Mg hydroxide Note if HwO is a gas it's steam = H2O (g) What happens when Group 2 metals react with oxygen - answerGroup 2 metals react with oxygen to form bases It creates a metal oxide which is a base What is the equation of Group 2 metals reacting with oxygen - answerMetal + Oxygen → metal oxide What happens when a Group 2 metal reacts with a chlorine - answerWhen group 2 metals react with chlorine a metal chloride is produced Metal + chlorine = metal chloride What happens when Group 2 oxides react with water - answerGroup 2 oxides form bases when reacted with water An alkaline solution is formed when reacting with water Oxides react readily with water to make hydroxides which dissociate to form Oh ions What is the reaction when Group 2 oxides react with water ? - - answerSrO + H2O → Sr2+ + 20H- What are the Group 2 bases and what are they used to do ? - answer- The bases are Group 2 Oxides and hydroxides - They neutralise reacti