Which two elements have similar characteristics- calcium hydrogen barium silicon krypton
1 answer:
Answer:
Calcium and barium
Explanation:
Krypton is a noble gas it do not take part in any reaction its physical and chemical property does not resembles to other atoms.
Hydrogen is the reducing gas its physical and chemical property does not resembles to other atoms.
Silicon is a semiconductor its physical and chemical property does not resembles to other atoms.
Calcium and Barium are placed in the same group 2 in the periodic table . Both are alkaline earth metal.
As both element are placed in the same group they have same physical and chemical properties.
Example:
Electro-negativity of Calcium and barium are approximately same. Both have same oxidation states +2, both are strong basic oxide. Both are present in nature in solid state. Both are s- block element. Thus, we can say Barium and Calcium have similar properties.
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Constant speed (without change in direction) is not accelerating. If you are slowing down, speeding up, or changing direction, you are accelerating
Answer:
<h3>14.97m/s</h3>
Explanation:
Given
Initial velocity of the car u = 8m/s
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Acceleration a = 2m/s²
Required
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v² = u²+2as
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For radio waves (which are electromagnetic waves), the relationship between frequency f and wavelength
is
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is
