Calcium and strontium are close to one another on thw oeriodic table. what do you know about their ionization energies ,their electron configurations and their charasteristics based on their position in the periodic table?

Both Ca and Sr are in Group 2 of the Periodic Table, with Sr below Ca (see image)..

Ionization energies

They are both metals, so they have relatively low ionization energies.

Sr is below Ca in the Group, so Sr has the lower ionization energy.

Electron configurations

Their electron configurations both end in ns².

For example, the electron configuration of Ca is [Kr]4s² and that of Sr is [Kr]5s².

Physical chsrscteristics:

Chemical characteristics

Both metals react with

•Hydrogen to form hydrides: M + H₂ ⟶ MH₂

•Oxygen to form oxides: 2M + O₂ ⟶ 2MO

•Nitrogen to form nitrides: 3M + N₂ ⟶ M₃N₂

•Halogens to form halides: M + X₂ ⟶ MX₂

•Water to displace hydrogen: M + 2H₂O ⟶ M(OH)₂ + H₂

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).