Chemistry

Rare gases are stable because they?

A. are chemically active B. contain equal number of protons and neutrons C. contain more electrons than protons D. have…

6 years ago

Which of the following halogens is liquid at room temperature?

A. lodine B. Chlorine C. Bromine D. Fluorine Correct Answer: Option C C. Bromine

6 years ago

In the periodic table all elements within the same group have the same?

A. number of neutrons B. number of valence electrons C. number of isotopes D. atomic number Correct Answer: Option B…

6 years ago

The element with electron configuration 1s2 2s2 2p 6 3s2 3p1 belongs to?

A. s-block period 3, group 1 B. p-block, period 3, group 2 C. s-block, period 3, group 3 D. p-block,…

6 years ago

Which of the following arrangements represents the correct order of electronic energy level?

A. 1s 2p 2s 3p 3s 3d 4s B. 1s 2s 2p 3s 3p 3d 4s C. 1s 2s 2p…

6 years ago

Which of the following could not be alkane?

A. C4H10 B. C5H12 C. C7H14 D. C8H18 Correct Answer: Option C C. C7H14

6 years ago

What volume of 0.100M sodium trioxonitrate (V) solution contains 5g of solute. [Na = 23, N = 14, O = 16]

A. 1.7 litres B. 0.420 litres C. 0.588 litres D. 2.35 litres Correct Answer: Option C A. 1.7 litres

6 years ago

Elements in the periodic table are arranged in the order of their?

A. atomic numbers B. metallic character C. mass number D. relative atomic mass Correct Answer: Option A A. atomic numbers

6 years ago

Which important nitrogen-containing compound is produced in Haber’s process?

A. NH3 B. NO2 C. NO D. HNO3 Correct Answer: Option A A. NH3

6 years ago