Explanation:
The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons
Answer: a + 2
Explanation: Alkali Earths or Group II has an ionization charge of a + 2. Alkali Metals have a ionization a + 1. Halogens or cold elements have a ionization of a +3.
Answer: the correct option is A (C.N. = 6; O.N. = +4.)
Explanation:In the coordination
compound[Cr(NH3)(en)2Cl]Br2,
the coordination number (C.N.) and oxidation number (O.N.) of the
metal atom are 6 and +4 respectively.
Density = mass /volume of the body. mass = 10.88 g, volume of the liquid displaced= 49.4-43.5=5.9 ml.
density = 10.88/5.9=1.844 g/ml~1.84 g/ml
The volume displaced is exactly the same as that of the body (The Eureka fro Archimedes!)
Answer:
0.5 moles
Explanation:
At STP,
<u><em>Every 22.4 L of carbon dioxide contains 1 mole of gas.</em></u>
<u><em /></u>
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Solving :
⇒ 22.4 L : 1 mole
⇒ 22.4 × 0.5 : 1 × 0.5
⇒ 11.2 L : 0.5 moles
